Client-Side Lock Bypass in WatchGuard Dimension Management System
CVE-2026-78103

5.1MEDIUM

Key Information:

Vendor

Watchguard

Status
Dimension
Vendor
CVE Published:
27 August 2026

Badges

👾 Exploit Exists

What is CVE-2026-78103?

A security flaw in WatchGuard Dimension allows an authenticated administrator to bypass the client-side lock/unlock control for configuration changes. The server-side configuration endpoint does not enforce the lock state, enabling administrators to submit changes directly. This can lead to a scenario where one administrator can overwrite ongoing changes made by another concurrent administrator, potentially causing configuration inconsistencies and unauthorized alterations.

Affected Version(s)

Dimension 2.0 < 2.3.1

References

https://psirt.watchguard.com/CVE-2026-78103
vendor-advisory

CVSS V4

Score:
5.1
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Simone Paganessi (https://www.linkedin.com/in/simonepaganessi)
.