CVE-2026-126218 Privilege escalation in FortiManager
An authenticated admin can escalate to root on FortiManager via crafted HTTP requests; FortiManager operators should care.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Harmful if only installed
- No
- Needs a specific call
- No
- Fix
- None listed
What is CVE-2026-126218?
CVE-2026-126218 is a high-severity privilege escalation vulnerability in Fortinet FortiManager, published on 11 Nov 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
A authorization bypass through user-controlled key vulnerability in Fortinet FortiManager 8.0.0 through 8.0.1, FortiManager 7.6.0 through 7.6.7, FortiManager 7.4.0 through 7.4.11 may allow a remote authenticated attacker with admin permission to elevate their privileges to root via crafted HTTP requests.
Weakness: CWE-639
Which versions are affected by CVE-2026-126218?
An affected version is exposed as installed. No special setting or call is needed.
How do I fix CVE-2026-126218?
No fix has been published for CVE-2026-126218 yet. Limit exposure of the affected software until one is available.
Upgrade, and run services with the fewest rights they need. More about Privilege escalation.
Is CVE-2026-126218 being exploited?
There is no known exploitation of CVE-2026-126218 in the wild and no public exploit code.
Sources
Also known as GHSA-35c9-x69h-7h3g.