Vulnerability in WatchGuard Fireware OS

[ Description ]Official description

A link following vulnerability in WatchGuard Fireware OS’s firewall daemon allows a local attacker with code execution as a low-privileged system process to overwrite arbitrary files with root privileges, and to tamper with firewall IP set data, by planting a crafted file system object and triggering a list update. Written content is partially constrained.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ Advisories ]Government CERT advisories

• BSI CERT-Bund27 Oct 2026WID-SEC-2026-4209

  WatchGuard Fireware OS: Multiple vulnerabilities Translated from German

  CVE-2026-113881CVE-2026-103593CVE-2026-93434+15 more CVEs

[ References ]References

• psirt.watchguard.com/CVE-2026-93864