by Kastro
Paper/Archive/CVE-2026-78174

CVE-2026-78174

WatchGuard Dimension — WatchGuard Dimension Session Hijack via Exposed Session Tokens in Diagnostic Logs

EPSS 0.4%CVSS 9.3
critical.is priorityof 100
35
CVSS 9.3 (CNA)9.3 / 10 × 3027.9Not in CISA KEV+300.0EPSS percentile 37.1.371 × 207.4No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
Dimension2.0 – < 2.3.12.3.1CNA

Scores by source

WatchGuard (CNA)9.3CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:H/SI:N/SA:N
CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: partial

References

advisorypsirt.watchguard.com/CVE-2026-78174