CVE-2025-53379: Fortinet Out of bounds read in GUI
This Fortinet advisory covers CVE-2025-53379 in FortiAuthenticator.
- CVE-2025-53379
Key facts
- Vendor rating
- High, CVSS 7.5
- CISA KEV
- Not listed (catalogue checked )
- Affected
- FortiAuthenticator: 6.3.0 through 6.6.2 (vendor-listed versions)
- Fixed in
- FortiAuthenticator 6.6: 6.6.3, FortiAuthenticator 6.5: migrate to a fixed release
- Advisory id
- FG-IR-26-146
- Source published
- Source revised
- Listed by VulniPulse
Compiled by VulniPulse from the linked sources. How records are collected and checked.
Affected products & platforms
Description
CVSSv3 Score:
7.5
An out of bounds read [CWE-125] vulnerability in FortiAuthenticator may allow a remote unauthenticated attacker to retrieve sensitive information via a specially crafted request.
Revised on 2026-07-14 00:00:00
Text from the source record.
- FortiAuthenticator: 6.3.0 through 6.6.2 (vendor-listed versions)
Official advisory · high-confidence parse· fetched ·verify at source
How to fix CVE-2025-53379
Upgrade to a fixed release named by Fortinet:
- FortiAuthenticator 6.6: 6.6.3
- FortiAuthenticator 6.5: migrate to a fixed release
Vendor guidance
- Upgrade per the Affected/Solution table: FortiAuthenticator 6.6: 6.6.3; FortiAuthenticator 6.5: migrate to a fixed release.
More Fortinet advisories
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