CVE-2026-19318

A stack-based buffer overflow vulnerability in the WatchGuard Fireware OS iked process allows a remote unauthenticated attacker to execute arbitrary code by sending specially crafted network traffic.

  • Published Aug 28, 2026
  • CVSS 9.3 critical
  • 0.5% chance of exploitation in the next 30 days (EPSS)

Affected software

CVE-2026-19318 at the National Vulnerability Database