SB2026041511 - Out-of-bounds write in FortiWeb
Published: April 15, 2026
Security Bulletin ID
SB2026041511
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 security vulnerability.
1) Out-of-bounds write (CVE-ID: CVE-2026-40688)
The vulnerability allows a remote privileged user to execute arbitrary code.
The vulnerability exists due to out-of-bounds write in administrative interface. A remote privileged attacker can execute arbitrary code or command via crafted HTTP requests.
Remediation
Install update from vendor's website.