Which products and versions are affected by CVE-2022-26318?

Affected: Fireware (Watchguard) versions 12.1.3, 12.1.3-u1, 12.1.3-u2, 12.1.3-u3, 12.1.3-u4, 12.1.3-u5, 12.1.3-u6, 12.1.3-u7. The full list is in the CVE brief.

Is CVE-2022-26318 being exploited in the wild?

It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Mar 17, 2022.

Is CVE-2022-26318 in the CISA KEV catalog?

Yes. It was added on Mar 25, 2022 with a federal remediation due date of Apr 15, 2022.

Is there a public exploit for CVE-2022-26318?

Public exploit code is available.

Is there a fix for CVE-2022-26318?

Fixed versions are available, including Fireware 12.1.3.

How urgently should CVE-2022-26318 be patched?

Brandefense priority: patch immediately, because it is listed as exploited in the wild.

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Vulnerability Intelligence

CVE-2022-26318

CriticalExploitedPublic exploit

On WatchGuard Firebox and XTM appliances, an unauthenticated user can execute arbitrary code, aka FBX-22786.

Published Mar 4, 2022 · Updated Nov 13, 2025

Key Facts

Patch immediately

CVE-2022-26318 is a critical-severity vulnerability (CVSS 9.8 v3.1) affecting Fireware (Watchguard).
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Mar 17, 2022. Public exploit code is available.
EPSS estimates a 78% probability of exploitation in the next 30 days.
Fixed versions are available, including Fireware 12.1.3.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.

CVSS v3.1

9.8

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

EPSS (30-day exploit likelihood)

78%

Higher than 99.5% of all scored CVEs

Exploited in the wild

Yes

4 catalog listings

Public exploit code

Available

Proof-of-concept or weaponized module

Get the full CVE-2022-26318 brief as a PDF

Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.

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.

Known-Exploited Catalog Listings

Catalog	Added	Remediation due	Ransomware use
CISA KEV	Mar 25, 2022	Apr 15, 2022	Not reported
Industry KEV feed	Mar 17, 2022	Apr 15, 2022	Not reported
CIRCL KEV	Mar 25, 2022	Apr 15, 2022	Not reported
ENISA EUVD	Mar 25, 2022	n/a	Not reported

Required action: Apply updates per vendor instructions.

Affected Products

11 affected entries in total

Product	Affected versions	Fixed in
FirewareWatchguard	12.1.3, 12.1.3-u1, 12.1.3-u2, 12.1.3-u3, 12.1.3-u4, 12.1.3-u5, 12.1.3-u6, 12.1.3-u7	12.1.3

Patched Releases

Fireware

12.1.3

Timeline

Publicly disclosed
Mar 4, 2022
Added to Industry KEV feed
Mar 17, 2022
Added to CISA KEV
Mar 25, 2022
Added to CIRCL KEV
Mar 25, 2022
Added to ENISA EUVD
Mar 25, 2022
Last updated
Nov 13, 2025

References

2 more references in the full CVE brief

FAQ

Common Questions.

On WatchGuard Firebox and XTM appliances, an unauthenticated user can execute arbitrary code, aka FBX-22786.
Affected: Fireware (Watchguard) versions 12.1.3, 12.1.3-u1, 12.1.3-u2, 12.1.3-u3, 12.1.3-u4, 12.1.3-u5, 12.1.3-u6, 12.1.3-u7. The full list is in the CVE brief.
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Mar 17, 2022.
Yes. It was added on Mar 25, 2022 with a federal remediation due date of Apr 15, 2022.
Public exploit code is available.
Fixed versions are available, including Fireware 12.1.3.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.

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