Exploitation evidence
Known exploited · CISA KEV listed
Added 2026-01-27. Ransomware campaign use: Unknown.
CISA required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
CISA due date: 2026-01-30. 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
Fortinet / FortiWeb
Default status: unaffected
- affected: 8.0.0 to ≤ 8.0.3 (semver)
- affected: 7.6.0 to ≤ 7.6.6 (semver)
- affected: 7.4.0 to ≤ 7.4.11 (semver)
Fortinet / FortiNAC-F
Default status: unaffected
- affected: 7.6.3 to ≤ 7.6.5 (semver)
Fortinet / FortiOS
Default status: unaffected
- affected: 7.6.0 to ≤ 7.6.5 (semver)
- affected: 7.4.0 to ≤ 7.4.10 (semver)
- affected: 7.2.0 to ≤ 7.2.12 (semver)
- affected: 7.0.0 to ≤ 7.0.18 (semver)
Fortinet / FortiAnalyzer
Default status: unaffected
- affected: 7.6.0 to ≤ 7.6.5 (semver)
- affected: 7.4.0 to ≤ 7.4.9 (semver)
- affected: 7.2.0 to ≤ 7.2.11 (semver)
- affected: 7.0.0 to ≤ 7.0.15 (semver)
Fortinet / FortiProxy
Default status: unaffected
- affected: 7.6.0 to ≤ 7.6.4 (semver)
- affected: 7.4.0 to ≤ 7.4.12 (semver)
- affected: 7.2.0 to ≤ 7.2.15 (semver)
- affected: 7.0.0 to ≤ 7.0.22 (semver)
Fortinet / FortiManager
Default status: unaffected
- affected: 7.6.0 to ≤ 7.6.5 (semver)
- affected: 7.4.0 to ≤ 7.4.9 (semver)
- affected: 7.2.0 to ≤ 7.2.11 (semver)
- affected: 7.0.0 to ≤ 7.0.15 (semver)
Fixes and workarounds
Upgrade to upcoming FortiOS version 8.0.0 or above Upgrade to FortiOS version 7.6.6 or above Upgrade to FortiOS version 7.4.11 or above Upgrade to FortiOS version 7.2.13 or above Upgrade to FortiOS version 7.0.19 or above Upgrade to upcoming FortiManager version 8.0.0 or above Upgrade to FortiManager version 7.6.6 or above Upgrade to FortiManager version 7.4.10 or above Upgrade to FortiManager version 7.2.12 or above Upgrade to FortiManager version 7.0.16 or above Upgrade to FortiAnalyzer version 7.6.6 or above Upgrade to FortiAnalyzer version 7.4.10 or above Upgrade to FortiAnalyzer version 7.2.12 or above Upgrade to FortiAnalyzer version 7.0.16 or above Upgrade to FortiProxy version 7.6.5 or above Upgrade to FortiProxy version 7.4.13 or above Upgrade to FortiProxy version 7.2.16 or above Upgrade to FortiProxy version 7.0.23 or above Upgrade to FortiWeb version 8.0.4 or above Upgrade to FortiWeb version 7.6.7 or above Upgrade to FortiWeb version 7.4.12 or above Upgrade to FortiNAC-F version 7.6.6 or above Upgrade to FortiSwitchManager version 7.2.9 or above Upgrade to FortiSwitchManager version 7.0.8 or above
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": 0.86592,
"percentile": 0.99744
}10 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-10",
"epss": 0.86592,
"percentile": 0.99743
}09 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-09",
"epss": 0.86592,
"percentile": 0.99742
}08 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-08",
"epss": 0.86592,
"percentile": 0.99742
}07 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-07",
"epss": 0.86592,
"percentile": 0.99742
}06 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-06",
"epss": 0.86592,
"percentile": 0.99742
}06 Nov 2026, 06:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-05",
"epss": 0.86592,
"percentile": 0.99742
}04 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-04",
"epss": 0.86592,
"percentile": 0.99741
}03 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-03",
"epss": 0.86592,
"percentile": 0.9974
}03 Nov 2026, 12:20 Jerusalem · CVE Program record changed
Stored CNA snapshot at this observation.
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-24858",
"options": [
{
"Exploitation": "active"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-01-28T04:55:41.959755Z",
"version": "2.0.3"
},
"type": "ssvc"
}
},
{
"other": {
"content": {
"dateAdded": "2026-01-27",
"reference": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-24858"
},
"type": "kev"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-02-26T15:04:50.331Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"references": [
{
"tags": [
"government-resource"
],
"url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-24858"
},
{
"tags": [
"vendor-advisory"
],
"url": "https://www.fortinet.com/blog/psirt-blogs/analysis-of-sso-abuse-on-fortios"
}
],
"title": "CISA ADP Vulnrichment"
},
{
"affected": [
{
"defaultStatus": "unknown",
"product": "RUGGEDCOM APE1808",
"vendor": "Siemens",
"versions": [
{
"lessThan": "*",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-05-12T12:08:56.335Z",
"orgId": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e",
"shortName": "siemens-SADP"
},
"references": [
{
"url": "https://cert-portal.siemens.com/productcert/html/ssa-975644.html"
}
],
"x_adpType": "supplier"
}
],
"cna": {
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"product": "FortiOS",
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]
},
{
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"cpe:2.3:a:fortinet:fortiproxy:7.0.9:*:*:*:*:*:*:*",
"cpe:2.3:a:fortinet:fortiproxy:7.0.8:*:*:*:*:*:*:*",
"cpe:2.3:a:fortinet:fortiproxy:7.0.7:*:*:*:*:*:*:*",
"cpe:2.3:a:fortinet:fortiproxy:7.0.6:*:*:*:*:*:*:*",
"cpe:2.3:a:fortinet:fortiproxy:7.0.5:*:*:*:*:*:*:*",
"cpe:2.3:a:fortinet:fortiproxy:7.0.4:*:*:*:*:*:*:*",
"cpe:2.3:a:fortinet:fortiproxy:7.0.3:*:*:*:*:*:*:*",
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"cpe:2.3:a:fortinet:fortiproxy:7.0.0:*:*:*:*:*:*:*"
],
"defaultStatus": "unaffected",
"product": "FortiProxy",
"vendor": "Fortinet",
"versions": [
{
"lessThanOrEqual": "7.6.4",
"status": "affected",
"version": "7.6.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.4.12",
"status": "affected",
"version": "7.4.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.2.15",
"status": "affected",
"version": "7.2.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.0.22",
"status": "affected",
"version": "7.0.0",
"versionType": "semver"
}
]
},
{
"cpes": [
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"cpe:2.3:o:fortinet:fortimanager:7.6.4:*:*:*:*:*:*:*",
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"cpe:2.3:o:fortinet:fortimanager:7.4.6:*:*:*:*:*:*:*",
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"cpe:2.3:o:fortinet:fortimanager:7.4.4:*:*:*:*:*:*:*",
"cpe:2.3:o:fortinet:fortimanager:7.4.3:*:*:*:*:*:*:*",
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"cpe:2.3:o:fortinet:fortimanager:7.2.8:*:*:*:*:*:*:*",
"cpe:2.3:o:fortinet:fortimanager:7.2.7:*:*:*:*:*:*:*",
"cpe:2.3:o:fortinet:fortimanager:7.2.6:*:*:*:*:*:*:*",
"cpe:2.3:o:fortinet:fortimanager:7.2.5:*:*:*:*:*:*:*",
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"cpe:2.3:o:fortinet:fortimanager:7.2.3:*:*:*:*:*:*:*",
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"cpe:2.3:o:fortinet:fortimanager:7.0.13:*:*:*:*:*:*:*",
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],
"defaultStatus": "unaffected",
"product": "FortiManager",
"vendor": "Fortinet",
"versions": [
{
"lessThanOrEqual": "7.6.5",
"status": "affected",
"version": "7.6.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.4.9",
"status": "affected",
"version": "7.4.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.2.11",
"status": "affected",
"version": "7.2.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.0.15",
"status": "affected",
"version": "7.0.0",
"versionType": "semver"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "An Authentication Bypass Using an Alternate Path or Channel vulnerability [CWE-288] vulnerability in Fortinet FortiAnalyzer 7.6.0 through 7.6.5, FortiAnalyzer 7.4.0 through 7.4.9, FortiAnalyzer 7.2.0 through 7.2.11, FortiAnalyzer 7.0.0 through 7.0.15, FortiManager 7.6.0 through 7.6.5, FortiManager 7.4.0 through 7.4.9, FortiManager 7.2.0 through 7.2.11, FortiManager 7.0.0 through 7.0.15, FortiNAC-F 7.6.3 through 7.6.5, FortiOS 7.6.0 through 7.6.5, FortiOS 7.4.0 through 7.4.10, FortiOS 7.2.0 through 7.2.12, FortiOS 7.0.0 through 7.0.18, FortiProxy 7.6.0 through 7.6.4, FortiProxy 7.4.0 through 7.4.12, FortiProxy 7.2.0 through 7.2.15, FortiProxy 7.0.0 through 7.0.22, FortiWeb 8.0.0 through 8.0.3, FortiWeb 7.6.0 through 7.6.6, FortiWeb 7.4.0 through 7.4.11 may allow an attacker with a FortiCloud account and a registered device to log into other devices registered to other accounts, if FortiCloud SSO authentication is enabled on those devices."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 9.4,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:H/RL:O/RC:C",
"version": "3.1"
},
"format": "CVSS"
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-288",
"description": "Improper access control",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-06-09T14:27:53.379Z",
"orgId": "6abe59d8-c742-4dff-8ce8-9b0ca1073da8",
"shortName": "fortinet"
},
"references": [
{
"name": "https://fortiguard.fortinet.com/psirt/FG-IR-26-060",
"url": "https://fortiguard.fortinet.com/psirt/FG-IR-26-060"
}
],
"solutions": [
{
"lang": "en",
"value": "Upgrade to upcoming FortiOS version 8.0.0 or above\nUpgrade to FortiOS version 7.6.6 or above\nUpgrade to FortiOS version 7.4.11 or above\nUpgrade to FortiOS version 7.2.13 or above\nUpgrade to FortiOS version 7.0.19 or above\nUpgrade to upcoming FortiManager version 8.0.0 or above\nUpgrade to FortiManager version 7.6.6 or above\nUpgrade to FortiManager version 7.4.10 or above\nUpgrade to FortiManager version 7.2.12 or above\nUpgrade to FortiManager version 7.0.16 or above\nUpgrade to FortiAnalyzer version 7.6.6 or above\nUpgrade to FortiAnalyzer version 7.4.10 or above\nUpgrade to FortiAnalyzer version 7.2.12 or above\nUpgrade to FortiAnalyzer version 7.0.16 or above\nUpgrade to FortiProxy version 7.6.5 or above\nUpgrade to FortiProxy version 7.4.13 or above\nUpgrade to FortiProxy version 7.2.16 or above\nUpgrade to FortiProxy version 7.0.23 or above\nUpgrade to FortiWeb version 8.0.4 or above\nUpgrade to FortiWeb version 7.6.7 or above\nUpgrade to FortiWeb version 7.4.12 or above\nUpgrade to FortiNAC-F version 7.6.6 or above\nUpgrade to FortiSwitchManager version 7.2.9 or above\nUpgrade to FortiSwitchManager version 7.0.8 or above"
}
]
}
},
"cveMetadata": {
"assignerOrgId": "6abe59d8-c742-4dff-8ce8-9b0ca1073da8",
"assignerShortName": "fortinet",
"cveId": "CVE-2026-24858",
"datePublished": "2026-01-27T19:18:23.591Z",
"dateReserved": "2026-01-27T15:11:02.057Z",
"dateUpdated": "2026-06-09T14:27:53.379Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}03 Nov 2026, 02:22 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-02",
"epss": 0.86592,
"percentile": 0.99739
}03 Nov 2026, 02:22 Jerusalem · CISA KEV status changed
Stored KEV snapshot at this observation.
{
"cveID": "CVE-2026-24858",
"cwes": [
"CWE-288"
],
"dateAdded": "2026-01-27",
"dueDate": "2026-01-30",
"forensicTriage": "No",
"knownRansomwareCampaignUse": "Unknown",
"notes": "Please adhere to Fortinet's guidelines to assess exposure and mitigate risks. Check for signs of potential compromise on all internet accessible Fortinet products affected by this vulnerability. Apply any final mitigations provided by the vendor as soon as they become available. For more information please see: https://fortiguard.fortinet.com/psirt/FG-IR-26-060 ; https://www.fortinet.com/blog/psirt-blogs/analysis-of-sso-abuse-on-fortios ; https://nvd.nist.gov/vuln/detail/CVE-2026-24858",
"product": "Multiple Products",
"requiredAction": "Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.",
"shortDescription": "Fortinet FortiAnalyzer, FortiManager, FortiOS, and FortiProxy contain an authentication bypass using an alternate path or channel that could allow an attacker with a FortiCloud account and a registered device to log into other devices registered to other accounts, if FortiCloud SSO authentication is enabled on those devices.",
"vendorProject": "Fortinet",
"vulnerabilityName": "Fortinet Multiple Products Authentication Bypass Using an Alternate Path or Channel Vulnerability"
}