Firebox and Fireware OS
CVE-2022-26318: Firebox and XTM Appliances Arbitrary Code Execution
On WatchGuard Firebox and XTM appliances, an unauthenticated user can execute arbitrary code, aka FBX-22786.
Published
ExploitedYes, in CISA KEVAdded 25 Mar 2022
Ransomware useNot reportedPer CISA
SeverityCRITICALCVSS 3.1 9.8
EPSS78%Chance of exploitation in 30 days
Public exploitNot tracked
FixSee advisory
Automatic summary from the vendor's CVE record. We haven't written a full analysis of this vulnerability yet.
Affected and fixed versions
| Product / branch | Fixed in |
|---|---|
| n/a n/a | See the advisory |
Always confirm against the vendor advisory, which lists every fixed hotfix.
What it is
On WatchGuard Firebox and XTM appliances, an unauthenticated user can execute arbitrary code, aka FBX-22786. This vulnerability impacts Fireware OS before 12.7.2_U2, 12.x before 12.1.3_U8, and 12.2.x through 12.5.x before 12.5.9_U2.
Exploitation
CISA lists this CVE as exploited in the wild since 25 Mar 2022.
Sources
KEV status, EPSS score and vendor data refreshed automatically, last on 13 Oct 2026.