WatchGuard Fireware OS Affected by 15 Vulnerabilities Including Critical CVE-2026-86131
WatchGuard Technologies disclosed 15 vulnerabilities in Fireware OS, the operating system powering its UTM appliances. The advisories were published between September 29 and 30, 2026, covering issues that range from remote code execution and authorization bypass to file disclosure and denial of service. Impact varies by deployment, yet none of the flaws had been observed in active exploitation at disclosure time. The most severe finding, CVE-2026-86131 in BOVPN Over TLS, received a CVSS v4.0 base score of 9.2 and Critical rating. This code-injection flaw in client configuration handling allows an attacker who controls the VPN server to execute arbitrary commands with root privileges on the connecting Firebox device. The remaining vulnerabilities affect multiple components and are tracked under separate CVE identifiers listed in the official advisories.
Security NEXTOct 2, 2026Translated from Japanese