CVE-2026-13043 Missing authorization in Endpoint Security
A local attacker can bypass authentication in the WatchGuard Endpoint Security kernel driver to read arbitrary kernel and process memory.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-13043?
CVE-2026-13043 is a critical missing authorization vulnerability in WatchGuard Endpoint Security, published on 1 Oct 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A missing authentication vulnerability in the Kernel Memory Access Driver (PSKMAD) used by WatchGuard endpoint security products allows a local, authenticated attacker to bypass the driver's access-control handshake and issue arbitrary privileged commands to the driver, resulting in disclosure of kernel and process memory.
Which versions are affected by CVE-2026-13043?
It affects 1 product.
Products include Watchguard Endpoint Security.
How do I fix CVE-2026-13043?
No fix has been published for CVE-2026-13043 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-13043 being exploited?
There is no known exploitation of CVE-2026-13043 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
Sources
Also known as GHSA-33g3-qcrh-xvc2.