Format string error in FortiManager and FortiAnalyzer - CVE-2026-126171
Published: November 11, 2026
Vulnerability identifier: #VU165224
CSH Severity: Low
CVSS v4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-126171
CWE-ID: CWE-134
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote privileged user to execute arbitrary code.
The vulnerability exists due to use of externally-controlled format string in fortisoc. An authenticated attacker can execute unauthorized commands via specially crafted HTTP request.
Affected software
FortiManager
FortiAnalyzer
FortiAnalyzer
How to mitigate CVE-2026-126171
Install update from vendor's website.
FortiManager - addressed in versions 7.2.13, 7.4.12, 7.6.8, 8.0.2
FortiAnalyzer - addressed in versions 7.2.13, 7.4.12, 7.6.8, 8.0.2
FortiAnalyzer - addressed in versions 7.2.13, 7.4.12, 7.6.8, 8.0.2