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Description

An Out-of-bounds Write vulnerability in WatchGuard Fireware OS may allow an authenticated privileged administrator to execute arbitrary code with root permissions via an exposed management interface. This vulnerability affects Fireware OS 11.9 up to and including 11.12.4_Update1, 12.0 up to and including 12.11.7 and 2025.1 up to and including 2026.1.1.

PUBLISHED Reserved 2026-02-27 | Published 2026-03-03 | Updated 2026-03-03 | Assigner WatchGuard




HIGH: 8.6CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Problem types

CWE-787 Out-of-bounds Write

Product status

Default status
unaffected

11.9 (semver)
affected

12.0 (semver)
affected

12.5 (semver)
affected

2025.1 (semver)
affected

Credits

btaol finder

References

www.watchguard.com/wgrd-psirt/advisory/wgsa-2026-0003

cve.org (CVE-2026-3342)

nvd.nist.gov (CVE-2026-3342)

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