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VulnerabilityPublished

CVE-2026-13224: WatchGuard Fireware OS · Path Traversal

Affects WatchGuard Fireware OSSource CVE Database V5

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Not known to be exploited · CVSS 8.2 High : upgrade to 12.5.21 soon.

Data as of 13 Nov 2026, 23:53 UTC

CVSS 4.0 base score
8.2High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.3% chance of exploitation in 30 days – higher than 30% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CISA SSVC
Exploitation
No evidence of active exploitation and no public proof of concept
Automatable
Attackers cannot reliably automate steps 1–4 of the kill chain
Technical impact
Limited control over the software or limited information exposure

CISA SSVC assessment, 2026-09-30.

Patch
Available – fixed in 12.5.21, 2026.3.2, 2026.2.3 +1
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 29 Sep 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 14 Nov 2026.

What to do

Upgrade Fireware to 12.5.21 (OS); 2026.3.2, 2026.2.3 or 12.12.3 (OS).

Affected software

ProductAffectedFixed in
WatchGuardFireware OSAffected
  • >=12.0 <12.5.21
Fixed in
  • 12.5.21
WatchGuardFireware OSAffected
  • >=2026.3 <2026.3.2
Fixed in
  • 2026.3.2
WatchGuardFireware OSAffected
  • >=2025.0 <2026.2.3
Fixed in
  • 2026.2.3
WatchGuardFireware OSAffected
  • >=12.0 <12.12.3
Fixed in
  • 12.12.3

AI-suggested

A fix is available in Fireware OS versions 12.5.21, 2026.3.2, 2026.2.3, and 12.12.3. Users should upgrade affected systems to these versions to remediate the vulnerability. No additional mitigation steps are indicated by the vendor advisory.

Description

CVE-2026-13224 is a path traversal vulnerability in the WatchGuard Fireware OS WebUI management agent. It allows an authenticated administrator to read or list arbitrary files on the local filesystem by sending a specially crafted management request. This vulnerability affects multiple versions of Fireware OS prior to their respective fixed releases. The issue has a high severity with a CVSS score of 8.2. Fixed versions are available, and users should upgrade to these versions to remediate the vulnerability.

References

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