Vulnerability · Published Mar 3, 2026 · Assigned by WatchGuard
CVE-2026-3344WatchGuard Firebox System Integrity Check Bypass
Medium 6.9
In plain English
A medium-severity security flaw in Fireware OS from WatchGuard. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 25% of all known vulnerabilities).
Severity (CVSS 4.0)6.9Medium
Exploit odds (30 days)0.3%top 75.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
A vulnerability in WatchGuard Fireware OS may allow an attacker to bypass the Fireware OS filesystem integrity check and maintain limited persistence via a maliciously-crafted firmware update package.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| WatchGuard | Fireware OS | 2025.1 – before 2026.1.212.0 – before 12.11.8 |
| WatchGuard | Fireware OS | 12.0 – before 12.5.17 |
Weakness: CWE-440 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
References
- https://psirt.watchguard.com/CVE-2026-3344 vendor-advisory
- https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2026-00005 vendor-advisory