CVE-2026-3344: CWE-440 in WatchGuard Fireware OS
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.
AI Analysis
Technical Summary
This vulnerability in WatchGuard Fireware OS enables an attacker with high privileges to bypass the operating system's filesystem integrity verification mechanism. By crafting a malicious firmware update package, the attacker can maintain limited persistence on the device. The issue is classified under CWE-440, indicating improper restriction of operations or permissions. The CVSS 4.0 base score is 6.9, reflecting a medium severity with network attack vector, low attack complexity, no user interaction, and high impact on integrity and availability.
Potential Impact
An attacker with high privileges can bypass filesystem integrity checks and maintain limited persistence on the affected Fireware OS device. This could allow unauthorized modifications to the system firmware, potentially undermining system security and stability. However, the impact is limited to integrity and availability, with no confidentiality impact reported. There are no known exploits in the wild at this time.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official patch or fix information is provided, users should monitor WatchGuard's advisories for updates. Until a fix is available, restrict access to high privilege accounts and carefully validate firmware update sources to reduce risk.
CVE-2026-3344: CWE-440 in WatchGuard Fireware OS
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.
CVSS v4.0
Score 6.9medium
Affected software
WatchGuard
Fireware OS
WatchGuard
Fireware OS
pkg:github/watchguard/fireware-osRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in WatchGuard Fireware OS enables an attacker with high privileges to bypass the operating system's filesystem integrity verification mechanism. By crafting a malicious firmware update package, the attacker can maintain limited persistence on the device. The issue is classified under CWE-440, indicating improper restriction of operations or permissions. The CVSS 4.0 base score is 6.9, reflecting a medium severity with network attack vector, low attack complexity, no user interaction, and high impact on integrity and availability.
Potential Impact
An attacker with high privileges can bypass filesystem integrity checks and maintain limited persistence on the affected Fireware OS device. This could allow unauthorized modifications to the system firmware, potentially undermining system security and stability. However, the impact is limited to integrity and availability, with no confidentiality impact reported. There are no known exploits in the wild at this time.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official patch or fix information is provided, users should monitor WatchGuard's advisories for updates. Until a fix is available, restrict access to high privilege accounts and carefully validate firmware update sources to reduce risk.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- WatchGuard
- Date Reserved
- 2026-02-27T15:37:53.452Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 69a6e6b4d1a09e29cb46e4dd
Added to database: 03/03/2026, 13:48:36 UTC
Last enriched: 08/12/2026, 14:06:41 UTC
Last updated: 09/14/2026, 10:01:30 UTC
Views: 171
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