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CVE-2026-78617

WatchGuard Dimension Web UI Authentication Brute-Force Due to Missing Rate Limiting

MEDIUM
6.3
CVSS Score
Published: August 27, 2026 at 11:26 PM UTC
Updated: August 28, 2026 at 08:19 PM UTC
1 product affected across 1 vendorDimension

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Severity
MEDIUM6.3
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

Description

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Dimension· WatchGuard
60%
2.0 ≤ v < 2.3.12.0
Affected range stops below 2.3.1, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

Vendor Advisory
Source: cverecord
https://psirt.watchguard.com/CVE-2026-78617

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.3MEDIUMWatchGuard
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-203CWE-307

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