Vulnerability in WatchGuard Fireware OS

[ Why it matters ]Priority signals

• Critical severity: CVSS 9.8

[ Description ]Official description

A code injection vulnerability in WatchGuard Fireware OS's BOVPN Over TLS client configuration handling allows an attacker who controls the remote VPN server to execute arbitrary commands as root on the connecting Firebox.

[ Fixes ]Fixes and patches

• Patch on psirt.watchguard.comVendor patch or bulletin · NVD · Reference tagged 'Patch' by NVD

[ Advisories ]Government CERT advisories

• NCSC-NL7 Oct 2026NCSC-2026-0404

  Vulnerabilities fixed in WatchGuard Fireware OS Translated from Dutch

  Probability/damage M/HCVE-2026-13046CVE-2026-13224CVE-2026-13225+18 more CVEs
• BSI CERT-Bund29 Sep 2026WID-SEC-2026-3646

  WatchGuard Fireware OS: Multiple vulnerabilities Translated from German

  CVE-2026-86104CVE-2026-86136CVE-2026-86105+12 more CVEs

[ References ]References

• psirt.watchguard.com/CVE-2026-86131PatchVendor Advisory