#VU126107 Out-of-bounds write in FortiWeb - CVE-2026-40688

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Main Vulnerability Database Vulnerabilities #VU126107

#VU126107 Out-of-bounds write in FortiWeb - CVE-2026-40688

Published: April 15, 2026


Vulnerability identifier: #VU126107
Vulnerability risk: Low
CVSSv4.0: 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/E:U/U:Clear
CVE-ID: CVE-2026-40688
CWE-ID: CWE-787
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
FortiWeb
Software vendor:
Fortinet, Inc

Description

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.

External links