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CVE-2025-53379

34
FAUCET Score

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.

First published: Jul 14, 2026Last modified: Jul 14, 2026

Impacted Technologies

VendorProductVersion(s)CPE
>= 6.5.0, <= 6.5.7CPE matchmatch criteria
cpe:2.3:a:fortinet:fortiauthenticator:*:*:*:*:*:*:*:*
>= 6.6.0, <= 6.6.2CPE matchmatch criteria
cpe:2.3:a:fortinet:fortiauthenticator:*:*:*:*:*:*:*:*
>= 6.3.0, <= 6.3.5CPE match
cpe:2.3:a:fortinet:fortiauthenticator:*:*:*:*:*:*:*:*
>= 6.4.0, <= 6.4.11CPE match
cpe:2.3:a:fortinet:fortiauthenticator:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.39%
Probability of exploitation in next 30 days
EPSS Percentile
31.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0039 is in the 11th percentile among its peer group of 51,553 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

fortiguard.fortinet.com / psirt/FG-IR-26-146
Vendor Advisory