Out-of-bounds read in FortiAuthenticator - CVE-2025-53379
Published: July 14, 2026
Vulnerability identifier: #VU137523
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2025-53379
CWE-ID: CWE-125
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote non-authenticated attacker to gain access to sensitive information.
The vulnerability exists due to out-of-bounds read in GUI. A remote unauthenticated attacker can retrieve sensitive information via a specially crafted request.
Affected software
FortiAuthenticator
How to mitigate CVE-2025-53379
Install update from vendor's website.
FortiAuthenticator - addressed in versions 6.5.8, 6.6.3