Quick answers
- Is CVE-2026-126246 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-126246 being exploited in the wild.
- How severe is CVE-2026-126246?
- High severity, with a CVSS score of 7.5, published 11 November 2026.
- Which products and versions are affected?
- Fortinet FortiAuthenticator 8.0.0 through 8.0.3, 6.6.0 through 6.6.10.
- Is there a fix for CVE-2026-126246?
- Yes: fixed in FortiAuthenticator 8.0.4 or above, 6.6.11 or above. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-126246 attacked?
- It is attacked over the network, in a web application.
- Am I affected by CVE-2026-126246?
- Check whether you run Fortinet FortiAuthenticator at an affected version. 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.
How to fix
- Fixed in: FortiAuthenticator 8.0.4 or above, 6.6.11 or above
Technical details
A null pointer dereference (CWE-476) in the FortiAuthenticator GUI allows an unauthenticated attacker to trigger a crash via HTTP requests. The vulnerability affects versions 8.0.0–8.0.3 and 6.6.0–6.6.10, requiring only network access and no authentication. Exploitation results in denial of service; patches are available in FortiAuthenticator 8.0.4+ and 6.6.11+.
Affected products
- Fortinet FortiAuthenticator 8.0.0 through 8.0.3, 6.6.0 through 6.6.10
Timeline
- 2026-11-10: disclosed