All vulnerabilities
CVE-2026-93865

Fireware OS Missing Authentication in FireCluster Sync Daemon Allows Remote Root Action Injection

WatchGuard Fireware OSNetwork & edge
Open in ThreatlineRecord JSON
CVSS
9.2Critical
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)No scoreNo FIRST EPSS score in this snapshot yet
Fixed in2026.4Also 12.12.4, 12.5.22CVE List
Published27 Oct 2026Updated 27 Oct 2026CVE List

What fixes it

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Description

A missing authentication vulnerability in the Fireware OS FireCluster synchronization daemon allows a remote, unauthenticated attacker to invoke privileged system-level administrative actions by sending a specially crafted request to the FireCluster management IP when the clustering feature is enabled.

Text from CVE List

Affected versions 3

  • Fireware OSaffected: 2025.1 before 2026.4CVE List
  • Fireware OSaffected: 12.0 before 12.12.4CVE List
  • Fireware OSaffected: 12.0 before 12.5.22CVE List

References 1