CVE-2026-13086
ZDI-26-632: WatchGuard FireWare OS epm connect Stack-based Buffer Overflow Remote Code Execution Vulnerability
Published Sep 9, 2026
This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of WatchGuard FireWare OS. Authentication is not required to exploit this vulnerability. The ZDI has assigned a CVSS rating of 8.8. The following CVEs are assigned: CVE-2026-13086.
Timeline
Detection, updates, and resolution for this record.
Sep 9, 2026 · Catalog
Detected
This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of WatchGuard FireWare OS. Authentication is not required to exploit this vulnerability. The ZDI has assigned a CVSS rating of 8.8. The following CVEs are assigned: CVE-2026-13086.
Sources
- CVE.orgCVE-2026-13086
Official CVE identifier
cve.org - FIRST EPSSCVE-2026-13086
30-day exploitation probability 0.4%
first.org - Zero Day InitiativeZDI-26-632
This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of WatchGuard FireWare OS. Authentication is not required to exploit this vulnerability. The ZDI has assigned a CVSS rating of 8.8. The following CVEs are assigned: CVE-2026-13086.
zerodayinitiative.com