SB2026111179 - Format string error in FortiAnalyzer and FortiManager
Published: November 11, 2026
Security Bulletin ID
SB2026111179
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Format string error (CVE-ID: CVE-2026-126171)
CWE-ID: CWE-134 - Use of Externally-Controlled Format String
CVSSv4: 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]
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.
Remediation
Install update from vendor's website.