Priority LOW 39
A missing authentication vulnerability in the FireCluster Sync processing allows an attacker positioned on the cluster interconnect, such as a compromised cluster peer or an on-path network attacker, to invoke privileged…
CVSS 4.0HIGH 8.7· Adjacent network · No auth · No interaction · EPSS 0.00237 · Published 2026-10-27 · Fixed in 2026.4, 12.12.4 +1 CWE-290
Priority LOW 31
An out-of-bounds read vulnerability in the FireCluster Sync processing allows an attacker positioned on the cluster interconnect, such as a compromised cluster peer or an on-path network attacker, to repeatedly crash the…
CVSS 4.0HIGH 7.2· Adjacent network · No auth · No interaction · EPSS 0.00165 · Published 2026-10-27 · Fixed in 2026.4, 12.12.4 +1 CWE-125
Priority MEDIUM 42
A heap-based buffer overflow vulnerability in the Fireware OS authentication service allows an attacker who controls or intercepts traffic to the configured Active Directory server to create a denial of service condition…
CVSS 4.0CRITICAL 9.2· Network · No auth · No interaction · EPSS 0.00419 · Published 2026-10-27 · Fixed in 2026.4, 12.12.4 +1 CWE-122
Priority LOW 32
An external control of file path vulnerability in a WatchGuard Fireware OS firewall diagnostic command allows a remote, authenticated attacker with at least read-only (Device Monitor) privileges and access to the managem…
CVSS 4.0HIGH 7.2· Network · Low privileges · No interaction · EPSS 0.00364 · Published 2026-10-27 · Fixed in 2026.4, 12.12.4 +1 CWE-59
Priority MEDIUM 40
A stack-based buffer overflow vulnerability in the Fireware OS logging service allows a network-adjacent attacker who can impersonate or intercept traffic to the configured log server to execute arbitrary code with root…
CVSS 4.0CRITICAL 9.1· Local · No auth · No interaction · EPSS 0.001 · Published 2026-10-27 · Fixed in 2026.4, 12.12.4 +1 CWE-121
Priority MEDIUM 44
An XPath injection vulnerability in WatchGuard Fireware OS's SSH authentication process allows a remote, unauthenticated attacker with access to the management SSH interface to extract sensitive configuration data by sub…
CVSS 4.0HIGH 8.7· Network · No auth · No interaction · EPSS 0.00458 · Published 2026-10-27 · Fixed in 12.5.22, 2026.4 +1 CWE-20
Priority LOW 39
A stack-based buffer overflow vulnerability in the Fireware OS certd process allows an authenticated attacker with access to the Firebox management interface to crash the certificate management service and potentially ex…
CVSS 4.0HIGH 8.6· Network · High privileges · No interaction · EPSS 0.00243 · Published 2026-10-27 · Fixed in 2026.4, 12.12.4 +1 CWE-121
Priority MEDIUM 42
A heap-based buffer overflow vulnerability exists in the Fireware OS authentication service allows an attacker who controls or intercepts traffic to the configured Active Directory server to create a denial of service co…
CVSS 4.0CRITICAL 9.2· Network · No auth · No interaction · EPSS 0.00419 · Published 2026-10-27 · Fixed in 2026.4, 12.12.4 +1 CWE-122
Priority MEDIUM 48
A stack-based buffer overflow vulnerability in Fireware OS's SIP proxy allows a remote, unauthenticated attacker to execute arbitrary code by sending a specially crafted request through a policy that uses the SIP proxy.
CVSS 4.0CRITICAL 9.2· Network · No auth · No interaction · EPSS 0.00557 · Published 2026-10-27 · Fixed in 2026.4, 12.12.4 +1 CWE-120
Priority MEDIUM 42
An integer overflow vulnerability in the WebSocket connection handling used by WatchGuard Fireware OS's Access Portal allows a remote, unauthenticated attacker to write beyond the bounds of a heap buffer by sending a spe…
CVSS 4.0CRITICAL 9.2· Network · No auth · No interaction · EPSS 0.00509 · Published 2026-10-27 · Fixed in 2026.4, 12.12.4 +1 CWE-190
Priority LOW 32
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 w…
CVSS 4.0HIGH 7.1· Local · Low privileges · No interaction · EPSS 0.00133 · Published 2026-10-27 · Fixed in 2026.4, 12.12.4 +1 CWE-22
Priority LOW 26
A missing authentication vulnerability in Fireware OS's FireCluster state synchronization feature allows an unauthenticated attacker positioned on the cluster synchronization network segment to force premature VPN tunnel…
CVSS 4.0MEDIUM 6.0· Adjacent network · No auth · No interaction · EPSS 0.00133 · Published 2026-10-27 · Fixed in 2026.4, 12.12.4 +1 CWE-294
Priority MEDIUM 44
A NULL pointer dereference vulnerability in WatchGuard Fireware OS’s management interface allows a remote, unauthenticated attacker with network access to the management interface to crash the management service by sendi…
CVSS 4.0HIGH 8.7· Network · No auth · No interaction · EPSS 0.00355 · Published 2026-10-27 · Fixed in 2026.4, 12.12.4 +1 CWE-1286
Priority MEDIUM 48
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 craft…
CVSS 4.0CRITICAL 9.2· Network · No auth · No interaction · EPSS 0.00463 · Published 2026-10-27 · Fixed in 2026.4, 12.12.4 +1 CWE-306