CVE-2025-59923: An improper access control vulnerability in Fortinet FortiAuthenticator 6.6.0 through 6.6.6, FortiAuthenticator 6.5…
CVE-2025-59923 · Severity: low · CVSS 2.7 · Published 2025-12-09
An improper access control vulnerability in Fortinet FortiAuthenticator 6.6.0 through 6.6.6, FortiAuthenticator 6.5 all versions, FortiAuthenticator 6.4 all versions, FortiAuthenticator 6.3 all versions may allow an authenticated attacker with at least read-only admin permission to obtain the credentials of other administrators' messaging services via crafted requests.
No. Junglewise Threat Intelligence has no report of CVE-2025-59923 being exploited in the wild.
How severe is CVE-2025-59923?
Low severity, with a CVSS score of 2.7, published 9 December 2025.
Which products and versions are affected?
Fortinet FortiAuthenticator. The advisory does not name versions.
Is there a fix for CVE-2025-59923?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
Am I affected by CVE-2025-59923?
Check whether you run Fortinet FortiAuthenticator. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.