Exploitation evidence
Known exploited · CISA KEV listed
Added 2024-12-03. Ransomware campaign use: Known.
CISA required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
CISA due date: 2024-12-24. 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
Zyxel / ATP series firmware
Default status: unaffected
- affected: versions V5.00 through V5.38
Zyxel / USG FLEX series firmware
Default status: unaffected
- affected: versions V5.00 through V5.38
Zyxel / USG FLEX 50(W) series firmware
Default status: unaffected
- affected: versions V5.10 through V5.38
Zyxel / USG20(W)-VPN series firmware
Default status: unaffected
- affected: versions V5.10 through V5.38
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
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": 0.02954,
"percentile": 0.87375
}10 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-10",
"epss": 0.02954,
"percentile": 0.87294
}09 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-09",
"epss": 0.02954,
"percentile": 0.87278
}08 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-08",
"epss": 0.02954,
"percentile": 0.87269
}07 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-07",
"epss": 0.02954,
"percentile": 0.87261
}06 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-06",
"epss": 0.02954,
"percentile": 0.87242
}06 Nov 2026, 06:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-05",
"epss": 0.02954,
"percentile": 0.8723
}04 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-04",
"epss": 0.02954,
"percentile": 0.87216
}04 Nov 2026, 12:20 Jerusalem · CVE Program record changed
Stored CNA snapshot at this observation.
{
"containers": {
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"versions": [
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"status": "affected",
"version": "5.10",
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},
{
"cpes": [
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"vendor": "zyxel",
"versions": [
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"status": "affected",
"version": "5.10",
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}
]
}
],
"metrics": [
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"other": {
"content": {
"id": "CVE-2024-11667",
"options": [
{
"Exploitation": "active"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
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"role": "CISA Coordinator",
"timestamp": "2024-12-05T00:00:00+00:00",
"version": "2.0.3"
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"type": "ssvc"
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"other": {
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"reference": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-11667"
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"references": [
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}
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"timeline": [
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"lang": "en",
"time": "2024-12-03T00:00:00.000Z",
"value": "CVE-2024-11667 added to CISA KEV"
}
],
"title": "CISA ADP Vulnrichment"
}
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"cna": {
"affected": [
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"defaultStatus": "unaffected",
"product": "ATP series firmware",
"vendor": "Zyxel",
"versions": [
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]
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]
},
{
"defaultStatus": "unaffected",
"product": "USG20(W)-VPN series firmware",
"vendor": "Zyxel",
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{
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"version": "versions V5.10 through V5.38"
}
]
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}
],
"value": "A directory traversal vulnerability in the web management interface of Zyxel ATP series firmware versions V5.00 through V5.38, USG FLEX series firmware versions V5.00 through V5.38, USG FLEX 50(W) series firmware versions V5.10 through V5.38, and USG20(W)-VPN series firmware versions V5.10 through V5.38 could allow an attacker to download or upload files via a crafted URL."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
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],
"problemTypes": [
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"descriptions": [
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"description": "CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')",
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}
]
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],
"providerMetadata": {
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"orgId": "96e50032-ad0d-4058-a115-4d2c13821f9f",
"shortName": "Zyxel"
},
"references": [
{
"tags": [
"vendor-advisory"
],
"url": "https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-protecting-against-recent-firewall-threats-11-27-2024"
}
],
"source": {
"discovery": "UNKNOWN"
},
"x_generator": {
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},
"cveMetadata": {
"assignerOrgId": "96e50032-ad0d-4058-a115-4d2c13821f9f",
"assignerShortName": "Zyxel",
"cveId": "CVE-2024-11667",
"datePublished": "2024-11-27T09:39:41.691Z",
"dateReserved": "2024-11-25T07:15:56.063Z",
"dateUpdated": "2026-08-05T03:55:55.854Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}03 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-03",
"epss": 0.02954,
"percentile": 0.87196
}03 Nov 2026, 02:22 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-02",
"epss": 0.02929,
"percentile": 0.87078
}03 Nov 2026, 02:22 Jerusalem · CISA KEV status changed
Stored KEV snapshot at this observation.
{
"cveID": "CVE-2024-11667",
"cwes": [
"CWE-22"
],
"dateAdded": "2024-12-03",
"dueDate": "2024-12-24",
"forensicTriage": "No",
"knownRansomwareCampaignUse": "Known",
"notes": "https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-protecting-against-recent-firewall-threats-11-21-2024 ; https://nvd.nist.gov/vuln/detail/CVE-2024-11667",
"product": "Multiple Firewalls",
"requiredAction": "Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.",
"shortDescription": "Multiple Zyxel firewalls contain a path traversal vulnerability in the web management interface that could allow an attacker to download or upload files via a crafted URL.",
"vendorProject": "Zyxel",
"vulnerabilityName": "Zyxel Multiple Firewalls Path Traversal Vulnerability"
}