CVE-2026-78174
WatchGuard Dimension Session Hijack via Exposed Session Tokens in Diagnostic Logs
No known exploitation. EPSS puts it in the 36th percentile. Fixed in 2.3.1.
What to do
Find your product and version, then upgrade to the build on the right.
- WatchGuard DimensionAffected: ≥ 2.0, < 2.3.1Upgrade to: 2.3.1Stated by: CVE record
Versions as the sources state them. Full version matrix after sign-in
What it is
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.
In plain language
No plain-language summary for this CVE yet.
Exploitation
Where each signal puts this CVE on the scale from published to confirmed exploited.
- CISA KEV
Not in the catalog. CISA has not confirmed exploitation.
- Public exploits
No public exploit or proof of concept found in the sources we track.
- EPSS
0.4% chance of exploitation activity in the next 30 days, which ranks it in the 36th percentile of scored CVEs.
Exploit Prediction Scoring System, FIRST.org. A probability, not a confirmation.
Lifecycle
9 events over 1 day, from the signal feeds we watch.
- Patch availablepatch available, patch available, record updated, record updated, record updated
- Publishedweakness classified, att&ck mapped
Affected products
Technical detail
Weaknesses
ATT&CK techniques
Mapped from the weaknesses above (CWE to ATT&CK), not observed in attacks.
- CollectionT1005Data from Local Systemmedium confidence
- Credential AccessT1552Unsecured Credentialsmedium confidence
- Privilege EscalationT1068Exploitation for Privilege Escalationhigh confidence
Sources
Watch the software you run.
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We'll flag the next CVE, public exploit or patch for Dimension, not every advisory.
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