CVE-2026-78174

WatchGuard Dimension records unredacted session identifiers for logged-in users in its web UI diagnostic log. A low-privileged Dimension Administrator can retrieve this log and extract a Super Administrator's session token while that administrator is logged in, enabling account takeover.

  • Published Aug 28, 2026
  • CVSS 9.3 critical
  • 0.4% chance of exploitation in the next 30 days (EPSS)

Affected software

CVE-2026-78174 at the National Vulnerability Database