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Medium 6.9Published Mar 3, 2026
CVE-2026-3344WatchGuard Firebox System Integrity Check Bypass
Updated under an hour ago ()
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It affects WatchGuard Fireware OS and 1 other product. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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Free account, 1 product
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.
- CVSS
- 6.9 MEDIUM (v4.0, CNA)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
- Weakness (CWE)
- CWE-440
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- WatchGuard
- NVD analysis
- Modified
- Record last updated
- Aug 10, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
WatchGuard Fireware OS watchguard:fireware_os (from the name) | from 2025.1 before 2026.1.2; from 12.0 before 12.11.8 | CNA record |
watchguard fireware watchguard:fireware | from 12.0 before 12.11.8; from 12.5.9 before 12.5.17; from 2025.1 before 2026.1.2 | NVD |
References
- https://psirt.watchguard.com/CVE-2026-3344vendor-advisory
- https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2026-00005vendor-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.