CVE-2025-53379: Information disclosure in Fortinet FortiAuthenticator
CVE-2025-53379 is an out-of-bounds read vulnerability in Fortinet FortiAuthenticator versions 6.6.0 through 6.6.2 and all versions of 6.5. This flaw allows a remote unauthenticated attacker to retrieve sensitive information by sending a specially crafted request. The vulnerability has a high severity with a CVSS score of 7. An official fix is available to address this issue.
AI Analysis
Technical Summary
This vulnerability in Fortinet FortiAuthenticator involves an out-of-bounds read that can be triggered remotely without authentication. Affected versions include 6.6.0 through 6.6.2 and all versions of 6.5. Exploitation allows an attacker to disclose sensitive information. The vulnerability has been assigned CVE-2025-53379 and carries a CVSS 3.1 base score of 7.0, indicating high severity. Fortinet has released an official fix to remediate this issue.
Potential Impact
Successful exploitation of this vulnerability can lead to unauthorized disclosure of sensitive information. There is no impact on integrity or availability reported. The vulnerability can be exploited remotely without authentication, increasing its risk profile.
Mitigation Recommendations
An official fix is available from Fortinet to remediate this vulnerability. Users should apply the vendor-provided patches promptly. Since this is not a cloud service, remediation depends on user action to update affected FortiAuthenticator versions.
CVE-2025-53379: Information disclosure in Fortinet FortiAuthenticator
Description
CVE-2025-53379 is an out-of-bounds read vulnerability in Fortinet FortiAuthenticator versions 6.6.0 through 6.6.2 and all versions of 6.5. This flaw allows a remote unauthenticated attacker to retrieve sensitive information by sending a specially crafted request. The vulnerability has a high severity with a CVSS score of 7. An official fix is available to address this issue.
CVSS v3.1
Score 7.0high
Affected software
cpe:2.3:a:fortinet:fortiauthenticator:6.6.2:*:*:*:*:*:*:*cpe:2.3:a:fortinet:fortiauthenticator:6.6.1:*:*:*:*:*:*:*cpe:2.3:a:fortinet:fortiauthenticator:6.6.0:*:*:*:*:*:*:*cpe:2.3:a:fortinet:fortiauthenticator:6.5.7:*:*:*:*:*:*:*cpe:2.3:a:fortinet:fortiauthenticator:6.5.6:*:*:*:*:*:*:*cpe:2.3:a:fortinet:fortiauthenticator:6.5.5:*:*:*:*:*:*:*AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in Fortinet FortiAuthenticator involves an out-of-bounds read that can be triggered remotely without authentication. Affected versions include 6.6.0 through 6.6.2 and all versions of 6.5. Exploitation allows an attacker to disclose sensitive information. The vulnerability has been assigned CVE-2025-53379 and carries a CVSS 3.1 base score of 7.0, indicating high severity. Fortinet has released an official fix to remediate this issue.
Potential Impact
Successful exploitation of this vulnerability can lead to unauthorized disclosure of sensitive information. There is no impact on integrity or availability reported. The vulnerability can be exploited remotely without authentication, increasing its risk profile.
Mitigation Recommendations
An official fix is available from Fortinet to remediate this vulnerability. Users should apply the vendor-provided patches promptly. Since this is not a cloud service, remediation depends on user action to update affected FortiAuthenticator versions.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- fortinet
- Date Reserved
- 2025-06-27T15:44:12.816Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
Threat ID: 6a565a3968715ace43c7b5a2
Added to database: 07/14/2026, 15:48:09 UTC
Last enriched: 07/14/2026, 16:19:19 UTC
Last updated: 07/15/2026, 01:35:49 UTC
Views: 8
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
External Links
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.