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CVE-2026-78174criticalCWE-200CWE-269CWE-532

WatchGuard Dimension Session Hijack via Exposed Session Tokens in Diagnostic Logs

28Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 9.3epss 0.3%
exploitation probability
0.3%top 72% of all CVEs
observed exploitation
nono source reports it
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.
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:H/SI:N/SA:N
Affected products
WatchGuard · Dimension