Relative path traversal in FortiWeb - CVE-2026-39814
Published: April 14, 2026
Vulnerability identifier: #VU125999
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/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-2026-39814
CWE-ID: CWE-23
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Fortinet, Inc
Affected software:
FortiWeb
FortiWeb
Detailed vulnerability description
The vulnerability allows a local privileged user to execute arbitrary code.
The vulnerability exists due to relative path traversal in CLI. A local privileged attacker can execute unauthorized code on the underlying system via crafted CLI commands.
How to mitigate CVE-2026-39814
Install update from vendor's website.