CVE-2022-26318

WatchGuard Firebox and XTM Appliances Arbitrary Code Execution

9.8 CRITICALActively exploited (CISA KEV)EPSS 78.2%

Published4 Mar 2022
Added to CISA KEV25 Mar 2022
Remediation due15 Apr 2022

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.

CVSS 3.1 breakdown

Attack vectorNetwork

Attack complexityLow

Privileges requiredNone

User interactionNone

ScopeUnchanged

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Affected products

Watchguard Fireware≥ 12.0.0 < 12.1.3 · ≥ 12.5 < 12.5.9 · ≥ 12.7.0 < 12.7.2 · 12.1.3

Remediation

Fixed in

Watchguard Fireware≥ 12.1.3

Patch & vendor advisories

https://www.watchguard.com/support/release-notes/fireware/12/en-US/EN_ReleaseNotes_Fireware_12_7_2/index.html#Fireware/en-US/resolved_issues.html

References

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-26318US Government Resource
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 NotesVendor Advisory

Frequently asked

Is CVE-2022-26318 being actively exploited?

Yes. CVE-2022-26318 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 25 Mar 2022.

How severe is CVE-2022-26318?

CVE-2022-26318 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 78.2% probability of exploitation.

Which products are affected by CVE-2022-26318?

Affected products include Watchguard Fireware.

How do I fix CVE-2022-26318?

Upgrade affected software to a fixed version, for example Watchguard Fireware 12.1.3 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2022-26318 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. Because it is on the CISA KEV list, Secuno flags any affected asset as top-priority automatically. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.