CVE-2026-78617 MEDIUM

CVE-2026-78617: WatchGuard Dimension Web UI Authentication Brute-Force Due to Missing Rate Limiting

Vendor Watchguard
Product Dimension
Weakness CWE-203
Published August 27, 2026
Last update August 28, 2026

CVSS base score

6.3/10
Attack vector Network
Attack complexity High
Privileges required None
User interaction None
Confidentiality
Integrity

CVSS vector

CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

August 27, 2026 CVE published
August 28, 2026 Record updated