CVE-2026-69378

Uncontrolled recursion in Microsoft Exchange Server allows an unauthorized attacker to deny service over a network.

  • Published Sep 8, 2026
  • CVSS 7.5 high
  • 1.2% chance of exploitation in the next 30 days (EPSS)
  • A fix is available

Affected software

CVE-2026-69378 at the National Vulnerability Database