WatchGuard Firebox and XTM Appliances Arbitrary Code Execution
On WatchGuard Firebox and XTM appliances, an unauthenticated user can execute arbitrary code.
- Vendor
- WatchGuard
- Product
- Firebox and XTM Appliances
- CVSS
- 9.8
- EPSS (exploit probability)
- 78.2%
- Status
- kev
- CISA patch-by (BOD 22-01)
- Added to KEV
Is CVE-2022-26318 being exploited?
Yes. CISA added CVE-2022-26318 to its Known Exploited Vulnerabilities catalog on . CISA only lists a CVE when it has reliable evidence of exploitation in the wild.
FIRST's EPSS model puts the probability of exploitation activity in the next 30 days at 78.2% (scored October 14, 2026).
- CISA KEV[ LISTED ]
- ENISA EUVD (exploited)[ — ]
- CIRCL KEV[ — ]
Catalog snapshot 2026-10-24. Full cross-catalog view: /kev-comparison
CVE-2022-26318 timeline
Every event links to its source. Catalog dates are each catalog's own; day offsets count from NVD publication. Data: JSON
What to do
CISA required actionApply updates per vendor instructions.
US federal civilian agencies must remediate by (21 days after listing) under BOD 22-01. Everyone else: that deadline is a sensible upper bound, not a target. Vendor guidance and the NVD record are linked under Source above.
Other WatchGuard CVEs we track
| CVE / Vulnerability | Severity | CVSS | EPSS | Added to KEV |
|---|---|---|---|---|
| CVE-2025-14733 WatchGuard Firebox Out of Bounds Write Vulnerabilityransomware usewrite-up | [ CRITICAL ] | 9.8 | 26.5% | |
| CVE-2025-9242 WatchGuard Firebox Out-of-Bounds Write Vulnerability | [ CRITICAL ] | 9.8 | 91.8% | |
| CVE-2022-23176 WatchGuard Firebox and XTM Privilege Escalation Vulnerability | [ HIGH ] | 8.8 | 10.8% |