CVE-2026-78617: WatchGuard Dimension

Medium severity, CVSS 6.3. EPSS: 0.4% chance of exploitation in the next 30 days.

WatchGuard Dimension's web login endpoint does not enforce effective rate-limiting or account lockout by default allowing a remote attacker to perform automated password guessing against user accounts. If the account lockout setting is enabled, brute-force attempts are blocked after a defined number of failed attempts, but this setting is not enabled by default.

Affected products

• WatchGuard Dimension: from 2.0, before 2.3.1 (fixed in 2.3.1)

Published 2026-08-28. Last modified 2026-08-28.