Out-of-bounds Read in Fortinet Fortiauthenticator
CVE-2025-53379
A out-of-bounds read vulnerability in Fortinet FortiAuthenticator 6.6.0 through 6.6.2, FortiAuthenticator 6.5 all versions may allow a remote unauthenticated attacker to retrieve sensitive information via a specially crafted request.
Vulnerability class: Buffer Overflow
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
Affected products
- Fortinet Fortiauthenticator — versions 6.6.0, 6.5.0, 6.4.0
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2025-53379?
- CVE-2025-53379 is a high-severity vulnerability in Fortinet Fortiauthenticator, classified under Out-of-bounds Read. CVSS score: 7.5/10. Published 2026-07-14.
- How severe is CVE-2025-53379?
- High severity. CVSS v3 base score is 7.5 out of 10.