Login Request a demo
High severity · published Jul 14, 2026
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…
7.5
CVSS
0.5%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 45% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FO
FortiAuthenticator · Fortinet
6.6.0 through 6.6.2; 6.5.0 through 6.5.7; 6.4.0 through 6.4.11; 6.3.0 through 6.3.5 · source: vendor, NVD
Affected product
FO
FortiAuthenticator
Fortinet
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-53379
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-53379
Vendor Advisory
https://fortiguard.fortinet.com/psirt/FG-IR-26-146
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