CVE-2026-78617

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.

  • Published Aug 28, 2026
  • CVSS 6.3 medium
  • 0.4% chance of exploitation in the next 30 days (EPSS)

Affected software

CVE-2026-78617 at the National Vulnerability Database