Exploitation evidence
Known exploited · CISA KEV listed
Added 2025-12-16. 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: 2025-12-23. 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 / FortiSwitchManager
Default status: unaffected
- affected: 7.2.0 to ≤ 7.2.6 (semver)
- affected: 7.0.0 to ≤ 7.0.5 (semver)
Fortinet / FortiOS
Default status: unaffected
- affected: 7.6.0 to ≤ 7.6.3 (semver)
- affected: 7.4.0 to ≤ 7.4.8 (semver)
- affected: 7.2.0 to ≤ 7.2.11 (semver)
- affected: 7.0.0 to ≤ 7.0.17 (semver)
Fortinet / FortiProxy
Default status: unaffected
- affected: 7.6.0 to ≤ 7.6.3 (semver)
- affected: 7.4.0 to ≤ 7.4.10 (semver)
- affected: 7.2.0 to ≤ 7.2.14 (semver)
- affected: 7.0.0 to ≤ 7.0.21 (semver)
Fixes and workarounds
Upgrade to FortiSwitchManager version 7.2.7 or above Upgrade to FortiSwitchManager version 7.0.6 or above Upgrade to FortiProxy version 7.6.4 or above Upgrade to FortiProxy version 7.4.11 or above Upgrade to FortiProxy version 7.2.15 or above Upgrade to FortiProxy version 7.0.22 or above Upgrade to FortiOS version 7.6.4 or above Upgrade to FortiOS version 7.4.9 or above Upgrade to FortiOS version 7.2.12 or above Upgrade to FortiOS version 7.0.18 or above Upgrade to FortiWeb version 8.0.1 or above Upgrade to FortiWeb version 7.6.5 or above Upgrade to FortiWeb version 7.4.10 or above Fortinet remediated this issue in FortiSASE version 25.3.b and hence customers do not need to perform any action. Upgrade to FortiPAM version 1.8.0 or above
Sources and related reporting
CVE Program record ↗ · Download tracked evidence as JSON
- https://fortiguard.fortinet.com/psirt/FG-IR-25-647
- https://arcticwolf.com/resources/blog/arctic-wolf-observes-malicious-sso-logins-following-disclosure-cve-2025-59718-cve-2025-59719/
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-59718
- https://cert-portal.siemens.com/productcert/html/ssa-864900.html
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": 0.68087,
"percentile": 0.99337
}10 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-10",
"epss": 0.68087,
"percentile": 0.99333
}09 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-09",
"epss": 0.68087,
"percentile": 0.99332
}08 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-08",
"epss": 0.68293,
"percentile": 0.99337
}07 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-07",
"epss": 0.68293,
"percentile": 0.99336
}06 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-06",
"epss": 0.68293,
"percentile": 0.99336
}06 Nov 2026, 06:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-05",
"epss": 0.68293,
"percentile": 0.99335
}04 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-04",
"epss": 0.68293,
"percentile": 0.99334
}03 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-03",
"epss": 0.68293,
"percentile": 0.99333
}03 Nov 2026, 18:20 Jerusalem · CVE Program record changed
Stored CNA snapshot at this observation.
{
"containers": {
"adp": [
{
"metrics": [
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"other": {
"content": {
"id": "CVE-2025-59718",
"options": [
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{
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"url": "https://arcticwolf.com/resources/blog/arctic-wolf-observes-malicious-sso-logins-following-disclosure-cve-2025-59718-cve-2025-59719/"
},
{
"tags": [
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],
"url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-59718"
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"timeline": [
{
"lang": "en",
"time": "2025-12-16T00:00:00.000Z",
"value": "CVE-2025-59718 added to CISA KEV"
}
],
"title": "CISA ADP Vulnrichment"
},
{
"affected": [
{
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"product": "RUGGEDCOM APE1808",
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],
"providerMetadata": {
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"orgId": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e",
"shortName": "siemens-SADP"
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"references": [
{
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}
],
"x_adpType": "supplier"
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],
"cna": {
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"product": "FortiOS",
"vendor": "Fortinet",
"versions": [
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"status": "affected",
"version": "7.6.0",
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{
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"status": "affected",
"version": "7.4.0",
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{
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"status": "affected",
"version": "7.2.0",
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{
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"status": "affected",
"version": "7.0.0",
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]
},
{
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],
"defaultStatus": "unaffected",
"product": "FortiProxy",
"vendor": "Fortinet",
"versions": [
{
"lessThanOrEqual": "7.6.3",
"status": "affected",
"version": "7.6.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.4.10",
"status": "affected",
"version": "7.4.0",
"versionType": "semver"
},
{
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"status": "affected",
"version": "7.2.0",
"versionType": "semver"
},
{
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"status": "affected",
"version": "7.0.0",
"versionType": "semver"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "A improper verification of cryptographic signature vulnerability in Fortinet FortiOS 7.6.0 through 7.6.3, FortiOS 7.4.0 through 7.4.8, FortiOS 7.2.0 through 7.2.11, FortiOS 7.0.0 through 7.0.17, FortiProxy 7.6.0 through 7.6.3, FortiProxy 7.4.0 through 7.4.10, FortiProxy 7.2.0 through 7.2.14, FortiProxy 7.0.0 through 7.0.21, FortiSwitchManager 7.2.0 through 7.2.6, FortiSwitchManager 7.0.0 through 7.0.5 allows an unauthenticated attacker to bypass the FortiCloud SSO login authentication via a crafted SAML response message."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 9.1,
"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:F/RL:O/RC:C",
"version": "3.1"
},
"format": "CVSS"
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-347",
"description": "Improper access control",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-03-20T12:39:05.952Z",
"orgId": "6abe59d8-c742-4dff-8ce8-9b0ca1073da8",
"shortName": "fortinet"
},
"references": [
{
"name": "https://fortiguard.fortinet.com/psirt/FG-IR-25-647",
"url": "https://fortiguard.fortinet.com/psirt/FG-IR-25-647"
}
],
"solutions": [
{
"lang": "en",
"value": "Upgrade to FortiSwitchManager version 7.2.7 or above\nUpgrade to FortiSwitchManager version 7.0.6 or above\nUpgrade to FortiProxy version 7.6.4 or above\nUpgrade to FortiProxy version 7.4.11 or above\nUpgrade to FortiProxy version 7.2.15 or above\nUpgrade to FortiProxy version 7.0.22 or above\nUpgrade to FortiOS version 7.6.4 or above\nUpgrade to FortiOS version 7.4.9 or above\nUpgrade to FortiOS version 7.2.12 or above\nUpgrade to FortiOS version 7.0.18 or above\nUpgrade to FortiWeb version 8.0.1 or above\nUpgrade to FortiWeb version 7.6.5 or above\nUpgrade to FortiWeb version 7.4.10 or above\nFortinet remediated this issue in FortiSASE version 25.3.b and hence customers do not need to perform any action.\nUpgrade to FortiPAM version 1.8.0 or above"
}
]
}
},
"cveMetadata": {
"assignerOrgId": "6abe59d8-c742-4dff-8ce8-9b0ca1073da8",
"assignerShortName": "fortinet",
"cveId": "CVE-2025-59718",
"datePublished": "2025-12-09T17:20:11.783Z",
"dateReserved": "2025-09-19T04:30:39.464Z",
"dateUpdated": "2026-10-15T01:09:26.767Z",
"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": 0.68293,
"percentile": 0.99332
}03 Nov 2026, 02:22 Jerusalem · CISA KEV status changed
Stored KEV snapshot at this observation.
{
"cveID": "CVE-2025-59718",
"cwes": [
"CWE-347"
],
"dateAdded": "2025-12-16",
"dueDate": "2025-12-23",
"forensicTriage": "No",
"knownRansomwareCampaignUse": "Unknown",
"notes": "https://fortiguard.fortinet.com/psirt/FG-IR-25-647 ; https://docs.fortinet.com/upgrade-tool/fortigate ; https://nvd.nist.gov/vuln/detail/CVE-2025-59718",
"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 FortiOS, FortiSwitchMaster, FortiProxy, and FortiWeb contain an improper verification of cryptographic signature vulnerability that may allow an unauthenticated attacker to bypass the FortiCloud SSO login authentication via a crafted SAML message. Please be aware that CVE-2025-59719 pertains to the same problem and is mentioned in the same vendor advisory. Ensure to apply all patches mentioned in the advisory.",
"vendorProject": "Fortinet",
"vulnerabilityName": "Fortinet Multiple Products Improper Verification of Cryptographic Signature Vulnerability"
}