CVE-2026-13224: WatchGuard Fireware OS · Path Traversal
Affects WatchGuard Fireware OSSource CVE Database V5
Not known to be exploited · CVSS 8.2 High : upgrade to 12.5.21 soon.
Data as of 13 Nov 2026, 23:53 UTC
- 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:NExploitation evidence
Disclosed: evidence found.
CVE published 29 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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
| Product | Affected | Fixed in |
|---|---|---|
| WatchGuardFireware OS | Affected
| Fixed in
|
| WatchGuardFireware OS | Affected
| Fixed in
|
| WatchGuardFireware OS | Affected
| Fixed in
|
| WatchGuardFireware OS | Affected
| Fixed in
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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.