UpHeron
All vulnerabilities

Servers and applications

CVE-2025-59718

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…

Actively exploited: CISA added it to its Known Exploited Vulnerabilities catalog on 16 Dec 2025.

Severity
Critical 9.8
Published
9 Dec 2025
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Fixed in
7.0.22, 7.2.12, 7.2.15, 7.4.9, 7.4.11, 7.6.4
Sources
NVD

Affected software

SoftwareAffected versions
Fortinet FortiProxyServers and applications · cpe:a:fortinet:fortiproxy
  • From 7.0.0 before 7.0.22
  • From 7.2.0 before 7.2.15
  • From 7.4.0 before 7.4.11
  • From 7.6.0 before 7.6.4
Fortinet FortiOSServers and applications · cpe:o:fortinet:fortios
  • From 7.0.0 before 7.0.18
  • From 7.2.0 before 7.2.12
  • From 7.4.0 before 7.4.9
  • From 7.6.0 before 7.6.4

Known exploited

CISA name
Fortinet Multiple Products Improper Verification of Cryptographic Signature Vulnerability
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.
Due for US agencies
23 Dec 2025
Used in ransomware
Not known

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2025-59718
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2025-59718