CVE-2022-26318

Name: CVE-2022-26318
Creator: NVD / NIST
Published: 2022-03-04T18:15:08.367+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10Actively ExploitedEPSS 78.30%

Last modified Jun 17, 2026

CVE-2022-26318 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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.. CISA has confirmed active exploitation in the wild. EPSS estimates a 78.30% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

78.30%

99.5th percentile

Probability of exploitation in the next 30 days. Learn more

Exploitation Status

This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by Apr 15, 2022.

Affected Software

Vendor	Product	Versions	Update
Watchguard	Fireware	>= 12.0.0, < 12.1.3	—
Watchguard	Fireware	>= 12.5, < 12.5.9	—
Watchguard	Fireware	>= 12.7.0, < 12.7.2	—
Watchguard	Fireware	12.1.3	—
Watchguard	Fireware	12.5.9	U1
Watchguard	Fireware	12.7.2	U1

References

https://www.watchguard.com/support/release-notes/fireware/12/en-US/EN_ReleaseNotes_Fireware_12_7_2/index.html#Fireware/en-US/resolved_issues.htmlRelease Notes, Vendor Advisory
https://www.watchguard.com/support/release-notes/fireware/12/en-US/EN_ReleaseNotes_Fireware_12_7_2/index.html#Fireware/en-US/resolved_issues.htmlRelease Notes, Vendor Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-26318US Government Resource

Timeline

Published: Mar 4, 2022
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2022-26318?

How severe is CVE-2022-26318?

CVE-2022-26318 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 78.30% probability of exploitation in the next 30 days. This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog.

How do I fix CVE-2022-26318?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-26318?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST