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

What is CVE-2022-26318?

CVE-2022-26318 is a critical code injection vulnerability in Watchguard Fireware, published on 4 Mar 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

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.

Which versions are affected by CVE-2022-26318?

It affects 1 product.

Products include Watchguard Fireware.

How do I fix CVE-2022-26318?

No fix has been published for CVE-2022-26318 yet. Limit exposure of the affected software until one is available. US federal agencies must fix it by 15 Apr 2022.

Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.

Is CVE-2022-26318 being exploited?

Yes. Attackers have exploited CVE-2022-26318 in the wild since at least 25 Mar 2022.

Public exploit code: 1 Metasploit module and 4 proofs of concept on GitHub.

Other vulnerabilities in Watchguard Fireware

• CVE-2025-14733 WatchGuard Firebox Out of Bounds Write Exploited Critical 9.3
• CVE-2025-9242 WatchGuard Firebox Out-of-Bounds Write Exploited Critical 9.3
• CVE-2022-23176 WatchGuard Firebox and XTM Privilege Escalation Exploited High 8.8
• CVE-2022-31789 Integer overflow in n/a Critical 9.8
• CVE-2013-6021 Memory corruption in n/a Critical 9.3

All Watchguard Fireware vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-vvw7-v96v-gmxr.