CVE-2025-59718
CRITICAL(9.8)KEVLikely Exploited
Fortinet Multiple Products Improper Verification of Cryptographic Signature Vulnerability
Description
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.
KEV Information
CVSS Score
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HOpen in CalculatorCWEs
Affected Products
| Vendor | Product | Version |
|---|---|---|
| fortinet | fortiproxy | >= 7.0.0, < 7.0.22; >= 7.2.0, < 7.2.15; >= 7.4.0, < 7.4.11; >= 7.6.0, < 7.6.4 |
| fortinet | fortiswitchmanager | >= 7.0.0, < 7.0.6; >= 7.2.0, < 7.2.7 |
| fortinet | fortios | >= 7.0.0, < 7.0.18; >= 7.2.0, < 7.2.12; >= 7.4.0, < 7.4.9; >= 7.6.0, < 7.6.4 |
| siemens | ruggedcom ape1808 firmware | - |
References
- https://fortiguard.fortinet.com/psirt/FG-IR-25-647(Vendor Advisory)
- https://arcticwolf.com/resources/blog/arctic-wolf-observes-malicious-sso-logins-following-disclosure-cve-2025-59718-cve-2025-59719/(Third Party Advisory)
- https://cert-portal.siemens.com/productcert/html/ssa-864900.html(Third Party Advisory)
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-59718(US Government Resource)
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