CVE-2026-73009

Use after free in Windows Secure Socket Tunneling Protocol (SSTP) allows an unauthorized attacker to execute code over a network.

  • Published Sep 8, 2026
  • CVSS 9.8 critical
  • 1.0% chance of exploitation in the next 30 days (EPSS)
  • A fix is available

Affected software

In the news

CVE-2026-73009 at the National Vulnerability Database