CVE-2026-78174WatchGuard Dimension Session Hijack via Exposed Session Tokens in Diagnostic Logs
Updated under an hour ago ()
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It affects WatchGuard Dimension. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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
- 9.3 CRITICAL (v4.0, CNA)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
- Weakness (CWE)
- CWE-200, CWE-269, CWE-532
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- WatchGuard
- NVD analysis
- Deferred
- Record last updated
- Aug 28, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
WatchGuard Dimension watchguard:dimension (from the name) | from 2.0 before 2.3.1 | CNA record |
References
- https://psirt.watchguard.com/CVE-2026-78174vendor-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.