Fortinet · Multiple Products
CVE-2025-59718
Fortinet Multiple Products Improper Verification of Cryptographic Signature Vulnerability
Was es ist
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.
CISA: 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.
Was zu tun ist
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Frist für US-Bundesbehörden: 23. Dezember 2025
- Zur CISA-Liste hinzugefügt
- 16. Dezember 2025
- Veröffentlicht
- 9. Dezember 2025
- Schweregrad
- Kritisch 9,1 CVSS 3.1
- Wahrscheinlichkeit von Angriffen in den nächsten 30 Tagen (EPSS)
- 68% unter den obersten 0,7% aller bekannten Schwachstellen
- Schwachstellentyp
- CWE-347
- Mehr Details
- NVD · CVE.org · CISA
Alle Quellen (1)
Weitere ausgenutzte Schwachstellen von Fortinet
| Hinzugefügt | Schwachstelle | Produkt | Schweregrad | Angriffswahrscheinlichkeit |
|---|---|---|---|---|
| 16.10.2026 | Path Traversal | Multiple Products | Mittel 5,4 | 1,3% |
| 09.09.2026 | Heap-based Buffer Overflow | Multiple Products | Hoch 7,4 | 3,7% |
| 27.01.2026 | Authentication Bypass Using an Alternate Path or Channel | Multiple Products | Kritisch 9,4 | 87% |
| 14.05.2025 | Stack-Based Buffer Overflow | Multiple Products | Kritisch 9,6 | 31% |
| 09.10.2024 | Format String | Multiple Products | Kritisch 9,8 | 62% |
| 11.10.2022 | Authentication Bypass | Multiple Products | Kritisch 9,8 | >99,9% |
| 01.10.2026 | Path Traversal | FortiMail | Kritisch 9,8 | 4,6% |
| 27.07.2026 | Exposure of Sensitive Information to an Unauthorized Actor | FortiOS | Mittel 5,3 | 29% |
Quellen: Known Exploited Vulnerabilities (CISA, gemeinfrei), CVE records (cve.org) und EPSS (FIRST). Die Angriffswahrscheinlichkeit ist die EPSS-Schätzung, dass jemand in den nächsten 30 Tagen versucht, die Schwachstelle auszunutzen.