Coverage › CVE-2025-59718
CVE-2025-59718 Unmapped
Fortinet Multiple Products Improper Verification of Cryptographic Signature Vulnerability
- Vendor / product
- Fortinet — Multiple Products
- Description (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.
- Added to KEV
- 2025-12-16 — after the latest CTID mapping snapshot (2025-07-28)
- Due date
- 2025-12-23
- 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.
- Known ransomware use
- Unknown
- CWE
- CWE-347
- CISA 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 - Elsewhere
- cve.org · NVD · CISA KEV · JSON
ATT&CK techniques
No public source states how this vulnerability is exploited in ATT&CK terms.
The only authoritative CVE → ATT&CK mapping in the open — CTID's Mappings Explorer, pinned to a KEV snapshot of 2025-07-28 and ATT&CK 16.1 — does not include CVE-2025-59718. This entry was added to KEV on 2025-12-16, after that snapshot; of the 283 entries added since, 0 have a mapping. CISA's catalogue carries no technique field. kevmap does not infer techniques from the CWE (CWE-347) — here is why — and does not guess.
This page will change state automatically if a mapping is published. What is shown above is everything CISA publishes about the entry.