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CVE-2026-78174 is an improper sensitive-data logging vulnerability in WatchGuard Dimension. The web UI diagnostic log records unredacted session identifiers for authenticated users. A Dimension Administrator with lower privileges can retrieve these logs and extract the active session token of a Super Administrator, allowing the lower-privileged user to impersonate that administrator. The issue is also associated with exposure of sensitive information and improper privilege management.
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No public exploit code observed for this vulnerability.
4 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Critical session-hijacking vulnerability in WatchGuard Dimension caused by exposed session tokens in diagnostic logs, enabling a low-privileged administrator to take over a Super Administrator session.
A WatchGuard Dimension web UI diagnostic-log exposure that records unredacted authenticated session identifiers. A low-privileged Dimension Administrator can obtain a concurrently logged-in Super Administrator's session token from the log and hijack that account.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.