Exploitation evidence
Known exploited · CISA KEV listed
Added 2024-04-24. Ransomware campaign use: Unknown.
CISA required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
CISA due date: 2024-05-01. This is the catalog’s deadline, not an assessment of your organization’s exposure.
KEV checked 13 Nov 2026, 00:20 Jerusalem · Original catalog ↗Reported products and versions
Cisco / Cisco Adaptive Security Appliance (ASA) Software
Default status: Not specified
- affected: 9.8.1
- affected: 9.8.1.5
- affected: 9.8.1.7
- affected: 9.8.2
- affected: 9.8.2.8
- affected: 9.8.2.14
- affected: 9.8.2.15
- affected: 9.8.2.17
- affected: 9.8.2.20
- affected: 9.8.2.24
- affected: 9.8.2.26
- affected: 9.8.2.28
- affected: 9.8.2.33
- affected: 9.8.2.35
- affected: 9.8.2.38
- affected: 9.8.3.8
- affected: 9.8.3.11
- affected: 9.8.3.14
- affected: 9.8.3.16
- affected: 9.8.3.18
- affected: 9.8.3.21
- affected: 9.8.3
- affected: 9.8.3.26
- affected: 9.8.3.29
- affected: 9.8.4
- affected: 9.8.4.3
- affected: 9.8.4.7
- affected: 9.8.4.8
- affected: 9.8.4.10
- affected: 9.8.4.12
- affected: 9.8.4.15
- affected: 9.8.4.17
- affected: 9.8.4.25
- affected: 9.8.4.20
- affected: 9.8.4.22
- affected: 9.8.4.26
- affected: 9.8.4.29
- affected: 9.8.4.32
- affected: 9.8.4.33
- affected: 9.8.4.34
- affected: 9.8.4.35
- affected: 9.8.4.39
- affected: 9.8.4.40
- affected: 9.8.4.41
- affected: 9.8.4.43
- affected: 9.8.4.44
- affected: 9.8.4.45
- affected: 9.8.4.46
- affected: 9.8.4.48
- affected: 9.12.1
- affected: 9.12.1.2
- affected: 9.12.1.3
- affected: 9.12.2
- affected: 9.12.2.4
- affected: 9.12.2.5
- affected: 9.12.2.9
- affected: 9.12.3
- affected: 9.12.3.2
- affected: 9.12.3.7
- affected: 9.12.4
- affected: 9.12.3.12
- affected: 9.12.3.9
- affected: 9.12.2.1
- affected: 9.12.4.2
- affected: 9.12.4.4
- affected: 9.12.4.7
- affected: 9.12.4.10
- affected: 9.12.4.13
- affected: 9.12.4.8
- affected: 9.12.4.18
- affected: 9.12.4.24
- affected: 9.12.4.26
- affected: 9.12.4.29
- affected: 9.12.4.30
- affected: 9.12.4.35
- affected: 9.12.4.37
- affected: 9.12.4.38
- affected: 9.12.4.39
- affected: 9.12.4.40
- affected: 9.12.4.41
- affected: 9.12.4.47
- affected: 9.12.4.48
- affected: 9.12.4.50
- affected: 9.12.4.52
- affected: 9.12.4.54
- affected: 9.12.4.55
- affected: 9.12.4.56
- affected: 9.12.4.58
- affected: 9.12.4.62
- affected: 9.12.4.65
- affected: 9.14.1
- affected: 9.14.1.10
- affected: 9.14.1.6
- affected: 9.14.1.15
- affected: 9.14.1.19
- affected: 9.14.1.30
- affected: 9.14.2
- affected: 9.14.2.4
- affected: 9.14.2.8
- affected: 9.14.2.13
- affected: 9.14.2.15
- affected: 9.14.3
- affected: 9.14.3.1
- affected: 9.14.3.9
- affected: 9.14.3.11
- affected: 9.14.3.13
- affected: 9.14.3.18
- affected: 9.14.3.15
- affected: 9.14.4
- affected: 9.14.4.6
- affected: 9.14.4.7
- affected: 9.14.4.12
- affected: 9.14.4.13
- affected: 9.14.4.14
- affected: 9.14.4.15
- affected: 9.14.4.17
- affected: 9.14.4.22
- affected: 9.14.4.23
- affected: 9.15.1
- affected: 9.15.1.7
- affected: 9.15.1.10
- affected: 9.15.1.15
- affected: 9.15.1.16
- affected: 9.15.1.17
- affected: 9.15.1.1
- affected: 9.15.1.21
- affected: 9.16.1
- affected: 9.16.1.28
- affected: 9.16.2
- affected: 9.16.2.3
- affected: 9.16.2.7
- affected: 9.16.2.11
- affected: 9.16.2.13
- affected: 9.16.2.14
- affected: 9.16.3
- affected: 9.16.3.3
- affected: 9.16.3.14
- affected: 9.16.3.15
- affected: 9.16.3.19
- affected: 9.16.3.23
- affected: 9.16.4
- affected: 9.16.4.9
- affected: 9.16.4.14
- affected: 9.16.4.18
- affected: 9.16.4.19
- affected: 9.16.4.27
- affected: 9.16.4.38
- affected: 9.16.4.39
- affected: 9.16.4.42
- affected: 9.16.4.48
- affected: 9.16.4.55
- affected: 9.17.1
- affected: 9.17.1.7
- affected: 9.17.1.9
- affected: 9.17.1.10
- affected: 9.17.1.11
- affected: 9.17.1.13
- affected: 9.17.1.15
- affected: 9.17.1.20
- affected: 9.17.1.30
- affected: 9.17.1.33
- affected: 9.18.1
- affected: 9.18.1.3
- affected: 9.18.2
- affected: 9.18.2.5
- affected: 9.18.2.7
- affected: 9.18.2.8
- affected: 9.18.3
- affected: 9.18.3.39
- affected: 9.18.3.46
- affected: 9.18.3.53
- affected: 9.18.3.55
- affected: 9.18.3.56
- affected: 9.18.4
- affected: 9.18.4.5
- affected: 9.18.4.8
- affected: 9.19.1
- affected: 9.19.1.5
- affected: 9.19.1.9
- affected: 9.19.1.12
- affected: 9.19.1.18
- affected: 9.19.1.22
- affected: 9.19.1.24
- affected: 9.19.1.27
- affected: 9.20.1
- affected: 9.20.1.5
- affected: 9.20.2
Cisco / Cisco Firepower Threat Defense Software
Default status: Not specified
- affected: 6.2.3
- affected: 6.2.3.1
- affected: 6.2.3.2
- affected: 6.2.3.3
- affected: 6.2.3.4
- affected: 6.2.3.5
- affected: 6.2.3.6
- affected: 6.2.3.7
- affected: 6.2.3.8
- affected: 6.2.3.10
- affected: 6.2.3.11
- affected: 6.2.3.9
- affected: 6.2.3.12
- affected: 6.2.3.13
- affected: 6.2.3.14
- affected: 6.2.3.15
- affected: 6.2.3.16
- affected: 6.2.3.17
- affected: 6.2.3.18
- affected: 6.6.0
- affected: 6.6.0.1
- affected: 6.6.1
- affected: 6.6.3
- affected: 6.6.4
- affected: 6.6.5
- affected: 6.6.5.1
- affected: 6.6.5.2
- affected: 6.6.7
- affected: 6.6.7.1
- affected: 6.4.0
- affected: 6.4.0.1
- affected: 6.4.0.3
- affected: 6.4.0.2
- affected: 6.4.0.4
- affected: 6.4.0.5
- affected: 6.4.0.6
- affected: 6.4.0.7
- affected: 6.4.0.8
- affected: 6.4.0.9
- affected: 6.4.0.10
- affected: 6.4.0.11
- affected: 6.4.0.12
- affected: 6.4.0.13
- affected: 6.4.0.14
- affected: 6.4.0.15
- affected: 6.4.0.16
- affected: 6.4.0.17
- affected: 6.7.0
- affected: 6.7.0.1
- affected: 6.7.0.2
- affected: 6.7.0.3
- affected: 7.0.0
- affected: 7.0.0.1
- affected: 7.0.1
- affected: 7.0.1.1
- affected: 7.0.2
- affected: 7.0.2.1
- affected: 7.0.3
- affected: 7.0.4
- affected: 7.0.5
- affected: 7.0.6
- affected: 7.0.6.1
- affected: 7.1.0
- affected: 7.1.0.1
- affected: 7.1.0.2
- affected: 7.1.0.3
- affected: 7.2.0
- affected: 7.2.0.1
- affected: 7.2.1
- affected: 7.2.2
- affected: 7.2.3
- affected: 7.2.4
- affected: 7.2.4.1
- affected: 7.2.5
- affected: 7.2.5.1
- affected: 7.3.0
- affected: 7.3.1
- affected: 7.3.1.1
- affected: 7.4.0
- affected: 7.4.1
Fixes and workarounds
No explicit solution text in the downloaded CVE record. Consult the vendor advisory; unaffected version ranges are shown above as reported, not inferred as a patch recommendation.
Sources and related reporting
CVE Program record ↗ · Download tracked evidence as JSON
- https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-websrvs-dos-X8gNucD2
- https://blog.talosintelligence.com/arcanedoor-new-espionage-focused-campaign-found-targeting-perimeter-network-devices/
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-20353
Observed change timeline
History begins when Egret first downloads each source. It is not the complete upstream CVE history.
12 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-12",
"epss": 0.69824,
"percentile": 0.9938
}10 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-10",
"epss": 0.69824,
"percentile": 0.99376
}09 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-09",
"epss": 0.69824,
"percentile": 0.99375
}08 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-08",
"epss": 0.69824,
"percentile": 0.99375
}07 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-07",
"epss": 0.69824,
"percentile": 0.99374
}06 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-06",
"epss": 0.69824,
"percentile": 0.99373
}06 Nov 2026, 06:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-05",
"epss": 0.69824,
"percentile": 0.99373
}04 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-04",
"epss": 0.69824,
"percentile": 0.99372
}04 Nov 2026, 12:20 Jerusalem · CVE Program record changed
Stored CNA snapshot at this observation.
{
"containers": {
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{
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"product": "asa",
"vendor": "cisco",
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"defaultStatus": "unknown",
"product": "asa",
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"defaultStatus": "unknown",
"product": "asa",
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"lessThanOrEqual": "9.19.1.27",
"status": "affected",
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"cpes": [
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"defaultStatus": "unknown",
"product": "asa",
"vendor": "cisco",
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"defaultStatus": "unknown",
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"vendor": "cisco",
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"status": "affected",
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"cpe:2.3:a:cisco:firepower_threat_defense_software:6.6.0:*:*:*:*:*:*:*"
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"defaultStatus": "unknown",
"product": "firepower_threat_defense_software",
"vendor": "cisco",
"versions": [
{
"lessThanOrEqual": "6.6.7.1",
"status": "affected",
"version": "6.6.0",
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},
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"cpes": [
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"defaultStatus": "unknown",
"product": "firepower_threat_defense_software",
"vendor": "cisco",
"versions": [
{
"lessThanOrEqual": "6.4.0.17",
"status": "affected",
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"defaultStatus": "unknown",
"product": "firepower_threat_defense_software",
"vendor": "cisco",
"versions": [
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"cpe:2.3:a:cisco:firepower_threat_defense_software:7.1.0:*:*:*:*:*:*:*"
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"lessThanOrEqual": "7.1.0.3",
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"vendor": "cisco",
"versions": [
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"metrics": [
{
"other": {
"content": {
"id": "CVE-2024-20353",
"options": [
{
"Exploitation": "active"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2024-04-29T20:02:41.285934Z",
"version": "2.0.3"
},
"type": "ssvc"
}
},
{
"other": {
"content": {
"dateAdded": "2024-04-24",
"reference": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-20353"
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"type": "kev"
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"providerMetadata": {
"dateUpdated": "2025-10-21T23:05:20.706Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"tags": [
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"url": "https://blog.talosintelligence.com/arcanedoor-new-espionage-focused-campaign-found-targeting-perimeter-network-devices/"
},
{
"tags": [
"government-resource"
],
"url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-20353"
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],
"timeline": [
{
"lang": "en",
"time": "2024-04-24T00:00:00.000Z",
"value": "CVE-2024-20353 added to CISA KEV"
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],
"title": "CISA ADP Vulnrichment"
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{
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"name": "cisco-sa-asaftd-websrvs-dos-X8gNucD2",
"tags": [
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"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-websrvs-dos-X8gNucD2"
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],
"title": "CVE Program Container"
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],
"cna": {
"affected": [
{
"product": "Cisco Adaptive Security Appliance (ASA) Software",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "9.8.1"
},
{
"status": "affected",
"version": "9.8.1.5"
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{
"status": "affected",
"version": "9.8.1.7"
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{
"status": "affected",
"version": "9.8.2"
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{
"status": "affected",
"version": "9.8.2.8"
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{
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"version": "9.8.2.14"
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"version": "9.8.2.17"
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{
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"version": "9.8.2.20"
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{
"status": "affected",
"version": "9.8.2.24"
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{
"status": "affected",
"version": "9.8.2.26"
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{
"status": "affected",
"version": "9.8.2.28"
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{
"status": "affected",
"version": "9.8.2.33"
},
{
"status": "affected",
"version": "9.8.2.35"
},
{
"status": "affected",
"version": "9.8.2.38"
},
{
"status": "affected",
"version": "9.8.3.8"
},
{
"status": "affected",
"version": "9.8.3.11"
},
{
"status": "affected",
"version": "9.8.3.14"
},
{
"status": "affected",
"version": "9.8.3.16"
},
{
"status": "affected",
"version": "9.8.3.18"
},
{
"status": "affected",
"version": "9.8.3.21"
},
{
"status": "affected",
"version": "9.8.3"
},
{
"status": "affected",
"version": "9.8.3.26"
},
{
"status": "affected",
"version": "9.8.3.29"
},
{
"status": "affected",
"version": "9.8.4"
},
{
"status": "affected",
"version": "9.8.4.3"
},
{
"status": "affected",
"version": "9.8.4.7"
},
{
"status": "affected",
"version": "9.8.4.8"
},
{
"status": "affected",
"version": "9.8.4.10"
},
{
"status": "affected",
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
"status": "affected",
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{
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{
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{
"status": "affected",
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{
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{
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{
"status": "affected",
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{
"status": "affected",
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{
"status": "affected",
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{
"status": "affected",
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{
"status": "affected",
"version": "9.14.4"
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{
"status": "affected",
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{
"status": "affected",
"version": "9.14.4.7"
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{
"status": "affected",
"version": "9.14.4.12"
},
{
"status": "affected",
"version": "9.14.4.13"
},
{
"status": "affected",
"version": "9.14.4.14"
},
{
"status": "affected",
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},
{
"status": "affected",
"version": "9.14.4.17"
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{
"status": "affected",
"version": "9.14.4.22"
},
{
"status": "affected",
"version": "9.14.4.23"
},
{
"status": "affected",
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},
{
"status": "affected",
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{
"status": "affected",
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{
"status": "affected",
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
"status": "affected",
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{
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{
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{
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{
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{
"status": "affected",
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{
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{
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{
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{
"status": "affected",
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{
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{
"status": "affected",
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{
"status": "affected",
"version": "9.17.1"
},
{
"status": "affected",
"version": "9.17.1.7"
},
{
"status": "affected",
"version": "9.17.1.9"
},
{
"status": "affected",
"version": "9.17.1.10"
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{
"status": "affected",
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{
"status": "affected",
"version": "9.17.1.13"
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{
"status": "affected",
"version": "9.17.1.15"
},
{
"status": "affected",
"version": "9.17.1.20"
},
{
"status": "affected",
"version": "9.17.1.30"
},
{
"status": "affected",
"version": "9.17.1.33"
},
{
"status": "affected",
"version": "9.18.1"
},
{
"status": "affected",
"version": "9.18.1.3"
},
{
"status": "affected",
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{
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{
"status": "affected",
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{
"status": "affected",
"version": "9.18.2.8"
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{
"status": "affected",
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{
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{
"status": "affected",
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{
"status": "affected",
"version": "9.18.3.53"
},
{
"status": "affected",
"version": "9.18.3.55"
},
{
"status": "affected",
"version": "9.18.3.56"
},
{
"status": "affected",
"version": "9.18.4"
},
{
"status": "affected",
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},
{
"status": "affected",
"version": "9.18.4.8"
},
{
"status": "affected",
"version": "9.19.1"
},
{
"status": "affected",
"version": "9.19.1.5"
},
{
"status": "affected",
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},
{
"status": "affected",
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},
{
"status": "affected",
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},
{
"status": "affected",
"version": "9.19.1.22"
},
{
"status": "affected",
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{
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},
{
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},
{
"status": "affected",
"version": "9.20.1.5"
},
{
"status": "affected",
"version": "9.20.2"
}
]
},
{
"product": "Cisco Firepower Threat Defense Software",
"vendor": "Cisco",
"versions": [
{
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"version": "6.2.3"
},
{
"status": "affected",
"version": "6.2.3.1"
},
{
"status": "affected",
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},
{
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},
{
"status": "affected",
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},
{
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},
{
"status": "affected",
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},
{
"status": "affected",
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},
{
"status": "affected",
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},
{
"status": "affected",
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},
{
"status": "affected",
"version": "6.2.3.11"
},
{
"status": "affected",
"version": "6.2.3.9"
},
{
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},
{
"status": "affected",
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},
{
"status": "affected",
"version": "6.2.3.14"
},
{
"status": "affected",
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},
{
"status": "affected",
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},
{
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},
{
"status": "affected",
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},
{
"status": "affected",
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},
{
"status": "affected",
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},
{
"status": "affected",
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},
{
"status": "affected",
"version": "6.6.3"
},
{
"status": "affected",
"version": "6.6.4"
},
{
"status": "affected",
"version": "6.6.5"
},
{
"status": "affected",
"version": "6.6.5.1"
},
{
"status": "affected",
"version": "6.6.5.2"
},
{
"status": "affected",
"version": "6.6.7"
},
{
"status": "affected",
"version": "6.6.7.1"
},
{
"status": "affected",
"version": "6.4.0"
},
{
"status": "affected",
"version": "6.4.0.1"
},
{
"status": "affected",
"version": "6.4.0.3"
},
{
"status": "affected",
"version": "6.4.0.2"
},
{
"status": "affected",
"version": "6.4.0.4"
},
{
"status": "affected",
"version": "6.4.0.5"
},
{
"status": "affected",
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},
{
"status": "affected",
"version": "6.4.0.7"
},
{
"status": "affected",
"version": "6.4.0.8"
},
{
"status": "affected",
"version": "6.4.0.9"
},
{
"status": "affected",
"version": "6.4.0.10"
},
{
"status": "affected",
"version": "6.4.0.11"
},
{
"status": "affected",
"version": "6.4.0.12"
},
{
"status": "affected",
"version": "6.4.0.13"
},
{
"status": "affected",
"version": "6.4.0.14"
},
{
"status": "affected",
"version": "6.4.0.15"
},
{
"status": "affected",
"version": "6.4.0.16"
},
{
"status": "affected",
"version": "6.4.0.17"
},
{
"status": "affected",
"version": "6.7.0"
},
{
"status": "affected",
"version": "6.7.0.1"
},
{
"status": "affected",
"version": "6.7.0.2"
},
{
"status": "affected",
"version": "6.7.0.3"
},
{
"status": "affected",
"version": "7.0.0"
},
{
"status": "affected",
"version": "7.0.0.1"
},
{
"status": "affected",
"version": "7.0.1"
},
{
"status": "affected",
"version": "7.0.1.1"
},
{
"status": "affected",
"version": "7.0.2"
},
{
"status": "affected",
"version": "7.0.2.1"
},
{
"status": "affected",
"version": "7.0.3"
},
{
"status": "affected",
"version": "7.0.4"
},
{
"status": "affected",
"version": "7.0.5"
},
{
"status": "affected",
"version": "7.0.6"
},
{
"status": "affected",
"version": "7.0.6.1"
},
{
"status": "affected",
"version": "7.1.0"
},
{
"status": "affected",
"version": "7.1.0.1"
},
{
"status": "affected",
"version": "7.1.0.2"
},
{
"status": "affected",
"version": "7.1.0.3"
},
{
"status": "affected",
"version": "7.2.0"
},
{
"status": "affected",
"version": "7.2.0.1"
},
{
"status": "affected",
"version": "7.2.1"
},
{
"status": "affected",
"version": "7.2.2"
},
{
"status": "affected",
"version": "7.2.3"
},
{
"status": "affected",
"version": "7.2.4"
},
{
"status": "affected",
"version": "7.2.4.1"
},
{
"status": "affected",
"version": "7.2.5"
},
{
"status": "affected",
"version": "7.2.5.1"
},
{
"status": "affected",
"version": "7.3.0"
},
{
"status": "affected",
"version": "7.3.1"
},
{
"status": "affected",
"version": "7.3.1.1"
},
{
"status": "affected",
"version": "7.4.0"
},
{
"status": "affected",
"version": "7.4.1"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "A vulnerability in the management and VPN web servers for Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause the device to reload unexpectedly, resulting in a denial of service (DoS) condition.\r\n\r This vulnerability is due to incomplete error checking when parsing an HTTP header. An attacker could exploit this vulnerability by sending a crafted HTTP request to a targeted web server on a device. A successful exploit could allow the attacker to cause a DoS condition when the device reloads."
}
],
"exploits": [
{
"lang": "en",
"value": "Cisco has confirmed that this vulnerability has been exploited. Cisco strongly recommends that customers upgrade to fixed software to resolve this vulnerability. Customers are also strongly encouraged to monitor system logs for indicators of undocumented configuration changes, unscheduled reboots, and any anomalous credential activity."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 8.6,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H",
"version": "3.1"
},
"format": "cvssV3_1"
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-835",
"description": "Loop with Unreachable Exit Condition ('Infinite Loop')",
"lang": "en",
"type": "cwe"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2024-04-24T18:15:57.646Z",
"orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"shortName": "cisco"
},
"references": [
{
"name": "cisco-sa-asaftd-websrvs-dos-X8gNucD2",
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-websrvs-dos-X8gNucD2"
}
],
"source": {
"advisory": "cisco-sa-asaftd-websrvs-dos-X8gNucD2",
"defects": [
"CSCwj10955"
],
"discovery": "EXTERNAL"
}
}
},
"cveMetadata": {
"assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"assignerShortName": "cisco",
"cveId": "CVE-2024-20353",
"datePublished": "2024-04-24T18:15:57.646Z",
"dateReserved": "2023-11-08T15:08:07.647Z",
"dateUpdated": "2025-10-21T23:05:20.706Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}03 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-03",
"epss": 0.69824,
"percentile": 0.9937
}03 Nov 2026, 02:22 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-02",
"epss": 0.69824,
"percentile": 0.99369
}03 Nov 2026, 02:22 Jerusalem · CISA KEV status changed
Stored KEV snapshot at this observation.
{
"cveID": "CVE-2024-20353",
"cwes": [
"CWE-835"
],
"dateAdded": "2024-04-24",
"dueDate": "2024-05-01",
"forensicTriage": "No",
"knownRansomwareCampaignUse": "Unknown",
"notes": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-websrvs-dos-X8gNucD2; https://nvd.nist.gov/vuln/detail/CVE-2024-20353",
"product": "Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD)",
"requiredAction": "Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.",
"shortDescription": "Cisco Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD) contain an infinite loop vulnerability that can lead to remote denial of service condition.",
"vendorProject": "Cisco",
"vulnerabilityName": "Cisco ASA and FTD Denial of Service Vulnerability"
}