CVE-2022-26318VulnerabilityPublished 03/25/2022Updated 10/24/2026

CVE-2022-26318: WatchGuard Firebox and XTM Appliances Arbitrary Code Execution

Affects WatchGuard Firebox and XTM AppliancesSource CISA KEV

Severity

High

No CVSS score published yet

Exploitation: Actively exploited – in CISA KEV since 03/25/2022
KEV deadline: 04/15/2022
EPSS: 78.2% chance of exploitation in 30 days – higher than 99% of CVEs

What to do

CISA required action

Apply updates per vendor instructions.

nvd.nist.gov/vuln/detail/CVE-2022-26318 (opens in a new tab)

Description

CVE-2022-26318 is a high-severity vulnerability affecting WatchGuard Firebox and XTM appliances that allows an unauthenticated user to execute arbitrary code. This vulnerability has been exploited in the wild. No specific affected versions or patch information is provided in the available data.

Summary

CVE-2022-26318 is a vulnerability in WatchGuard Firebox and XTM appliances that permits unauthenticated attackers to execute arbitrary code on the affected devices. The vulnerability is identified with CWE-122 (Heap-based Buffer Overflow). Exploitation has been observed in the wild, indicating active threat usage. However, no detailed information about affected versions or vendor patches is provided in the source data.

Impact

Successful exploitation allows an unauthenticated attacker to execute arbitrary code on vulnerable WatchGuard Firebox and XTM appliances, potentially leading to full system compromise. The vulnerability has been exploited in the wild, increasing the risk to affected organizations.

Mitigation

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until official fixes are available, monitor vendor communications closely for updates. No vendor advisory or patch information is provided in the current data.

Weaknesses

CWE-122Heap-based Buffer Overflow (opens in a new tab)

What to do

Description

AnalysisAI-generated, updated 10/24/2026, 11:11:10 UTC

Weaknesses

References

Related threats