CVE-2026-78103 Dimension Log Server Configuration Lock Bypass Vulnerability
Authenticated administrators can bypass client-side locks to overwrite concurrent configuration changes in WatchGuard Dimension.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-78103?
CVE-2026-78103 is a medium-severity vulnerability in WatchGuard Dimension, published on 27 Aug 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
WatchGuard Dimension provides a client-side lock/unlock UI control for management changes. The server-side configuration endpoint does not enforce this lock/unlock workflow state, allowing an authenticated administrator to submit configuration changes directly to the endpoint without first completing the UI unlock step. This allows an authenticated read-write administrator session to bypass the intended editing workflow and overwrite configuration changes being made by another concurrent administrator session.
Weakness: CWE-841
Which versions are affected by CVE-2026-78103?
How do I fix CVE-2026-78103?
No fix has been published for CVE-2026-78103 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-78103 being exploited?
There is no known exploitation of CVE-2026-78103 in the wild and no public exploit code.
Sources
Also known as GHSA-6c67-gmx4-f33h.