Medium [CVE-2026-78617] WatchGuard Dimension Web UI Authentication Brute-Force Due to Missing Rate Limiting
This medium-severity WatchGuard advisory covers CVE-2026-78617 affecting Dimension.
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Summary
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.
- Dimension 2.0 before 2.3.1
Official advisory · high-confidence parse· fetched 54 minutes ago·verify at source
- 2.3.1
Official advisory · high-confidence parse· fetched 54 minutes ago·verify at source
Mitigation
Upgrade to a fixed release: 2.3.1. That is the remediation for this advisory.
The vendor advisory may list additional interim mitigations or workarounds not captured here — review it before change work.
Official advisory · high-confidence parse· fetched 54 minutes ago·verify at source
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