Stack-based buffer overflow in FortiWeb - CVE-2026-24640
Published: March 10, 2026
Vulnerability identifier: #VU123701
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-24640
CWE-ID: CWE-121
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Fortinet, Inc
Affected software:
FortiWeb
FortiWeb
Detailed vulnerability description
The vulnerability allows a remote privileged user to execute arbitrary code.
The vulnerability exists due to stack-based buffer overflow in API protection. A remote authenticated attacker can execute arbitrary code or commands via crafted HTTP requests. Success of the attack is conditioned to bypassing stack protection and ASLR.
How to mitigate CVE-2026-24640
Install update from vendor's website.