An external control of file path vulnerability in a WatchGuard Fireware OS firewall diagnostic command allows a
Source GCVE Database
Not known to be exploited · CVSS 7.2 High : upgrade to 2026.4 or 12.12.4 soon.
Data as of 27 Oct 2026, 20:13 UTC
- Patch
- Available – fixed in 2026.4, 12.12.4, 12.5.22
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:NExploitation evidence
Disclosed: evidence found.
CVE published 27 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: 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 26 Oct 2026.
What to do
Upgrade Fireware to 2026.4 or 12.12.4 (OS); 12.5.22 (OS).
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| WatchGuardFireware OS | Affected
| Fixed in
|
| WatchGuardFireware OS | Affected
| Fixed in
|
| WatchGuardFireware OS | Affected
| Fixed in
|
AI-suggested
If you cannot patch yet, restrict access to the management CLI and limit Device Monitor privileges to trusted users only.
Description
A vulnerability in WatchGuard Fireware OS firewall diagnostic command allows a remote, authenticated attacker with read-only Device Monitor privileges and management CLI access to create, truncate, or overwrite arbitrary files and modify kernel parameters with root privileges by submitting a specially crafted command. The written content is limited to numeric values.