FKIE_CVE-2025-59718
Vulnerability from fkie_nvd - Published: 2025-12-09 18:15 - Updated: 2026-06-17 09:46
Severity ?
Summary
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.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| fortinet | fortiproxy | * | |
| fortinet | fortiproxy | * | |
| fortinet | fortiproxy | * | |
| fortinet | fortiproxy | * | |
| fortinet | fortiswitchmanager | * | |
| fortinet | fortiswitchmanager | * | |
| fortinet | fortios | * | |
| fortinet | fortios | * | |
| fortinet | fortios | * | |
| fortinet | fortios | * | |
| siemens | ruggedcom_ape1808_firmware | - | |
| siemens | ruggedcom_ape1808 | - |
{
"affected": [
{
"affectedData": [
{
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"status": "affected",
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"status": "affected",
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},
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"status": "affected",
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}
]
},
{
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"defaultStatus": "unaffected",
"product": "FortiProxy",
"vendor": "Fortinet",
"versions": [
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"status": "affected",
"version": "7.6.0",
"versionType": "semver"
},
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}
],
"source": "psirt@fortinet.com"
},
{
"affectedData": [
{
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"product": "RUGGEDCOM APE1808",
"vendor": "Siemens",
"versions": [
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"version": "0",
"versionType": "custom"
}
]
}
],
"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"
}
],
"cisaActionDue": "2025-12-23",
"cisaExploitAdd": "2025-12-16",
"cisaRequiredAction": "Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.",
"cisaVulnerabilityName": "Fortinet Multiple Products Improper Verification of Cryptographic Signature Vulnerability",
"configurations": [
{
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],
"cveTags": [],
"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."
},
{
"lang": "es",
"value": "Una vulnerabilidad de verificaci\u00f3n incorrecta de firma criptogr\u00e1fica en Fortinet FortiOS 7.6.0 hasta 7.6.3, FortiOS 7.4.0 hasta 7.4.8, FortiOS 7.2.0 hasta 7.2.11, FortiOS 7.0.0 hasta 7.0.17, FortiProxy 7.6.0 hasta 7.6.3, FortiProxy 7.4.0 hasta 7.4.10, FortiProxy 7.2.0 hasta 7.2.14, FortiProxy 7.0.0 hasta 7.0.21, FortiSwitchManager 7.2.0 hasta 7.2.6, FortiSwitchManager 7.0.0 hasta 7.0.5 permite a un atacante no autenticado eludir la autenticaci\u00f3n de inicio de sesi\u00f3n SSO de FortiCloud a trav\u00e9s de un mensaje de respuesta SAML manipulado."
}
],
"id": "CVE-2025-59718",
"lastModified": "2026-06-17T09:46:35.807",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 9.8,
"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",
"version": "3.1"
},
"exploitabilityScore": 3.9,
"impactScore": 5.9,
"source": "psirt@fortinet.com",
"type": "Secondary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2025-59718",
"options": [
{
"exploitation": "active"
},
{
"automatable": "yes"
},
{
"technicalImpact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2025-12-17T04:55:21.365957Z",
"version": "2.0.3"
}
}
]
},
"published": "2025-12-09T18:15:54.983",
"references": [
{
"source": "psirt@fortinet.com",
"tags": [
"Vendor Advisory"
],
"url": "https://fortiguard.fortinet.com/psirt/FG-IR-25-647"
},
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"tags": [
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],
"url": "https://arcticwolf.com/resources/blog/arctic-wolf-observes-malicious-sso-logins-following-disclosure-cve-2025-59718-cve-2025-59719/"
},
{
"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e",
"tags": [
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],
"url": "https://cert-portal.siemens.com/productcert/html/ssa-864900.html"
},
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"tags": [
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],
"url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-59718"
}
],
"sourceIdentifier": "psirt@fortinet.com",
"vulnStatus": "Analyzed",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-347"
}
],
"source": "psirt@fortinet.com",
"type": "Secondary"
}
]
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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