Fireware
CVE-2026-3344
MEDIUM
Severity by source
AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N
Lifecycle Timeline
2DescriptionCVE.org
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.This issue affects Fireware OS 12.0 up to and including 12.11.7, 12.5.9 up to and including 12.5.16, and 2025.1 up to and including 2026.1.1.
AnalysisAI
WatchGuard Fireware OS contains a filesystem integrity bypass vulnerability in versions 12.0-12.11.7, 12.5.9-12.5.16, and 2025.1-2026.1.1 that allows authenticated attackers with high privileges to deploy malicious firmware updates and establish limited persistence on affected appliances. An attacker could circumvent security checks designed to validate firmware authenticity, though currently no patch is available.
Technical ContextAI
Classified as CWE-440 (Expected Behavior Violation). Affects Fireware. 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.This issue affects Fireware OS 12.0 up to and including 12.11.7, 12.5.9 up to and including 12.5.16, and 2025.1 up to and including 2026.1.1.
RemediationAI
Monitor vendor advisories for a patch. Restrict network access to the affected service where possible.
WatchGuard Fireware OS contains an out-of-bounds write in IKEv2 VPN handling enabling unauthenticated remote code execut
Buffer overflow in WGagent in WatchGuard WSM and Fireware before 11.8 allows remote attackers to execute arbitrary code
On WatchGuard Firebox and XTM appliances, an unauthenticated user can execute arbitrary code, aka FBX-22786. Rated criti
An FBX-5312 issue was discovered in WatchGuard Fireware before 12.0. Rated high severity (CVSS 7.5), this vulnerability
WatchGuard Fireware v11.12.1 and earlier mishandles requests referring to an XML External Entity (XXE), in the XML-RPC a
WatchGuard Firebox and XTM appliances allow an unauthenticated remote attacker to retrieve sensitive authentication serv
An FBX-5313 issue was discovered in WatchGuard Fireware before 12.0. Rated medium severity (CVSS 6.1), this vulnerabilit
An integer overflow in WatchGuard Firebox and XTM appliances allows an unauthenticated remote attacker to trigger a buff
WatchGuard Fireware allows user enumeration, e.g., in the Firebox XML-RPC login handler. Rated medium severity (CVSS 5.3
WatchGuard Firebox and XTM appliances allow an unauthenticated remote attacker to delete arbitrary files from a limited
Multiple cross-site scripting (XSS) vulnerabilities in the firewall policy management pages in WatchGuard Fireware XTM b
WatchGuard Firebox and XTM appliances allow an authenticated remote attacker with unprivileged credentials to upload fil
Same weakness CWE-440 – Expected Behavior Violation
View allSame technique Authentication Bypass
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External POC / Exploit Code
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