CVE-2026-78008

A buffer overflow vulnerability in the WatchGuard Fireware OS Management Web UI allows an authenticated administrator with network access to cause a denial of service (DoS) condition or potentially execute arbitrary code by sending specially crafted network traffic.

  • Published Aug 28, 2026
  • CVSS 8.6 high
  • 0.6% chance of exploitation in the next 30 days (EPSS)

Affected software

CVE-2026-78008 at the National Vulnerability Database