VULNERABILITY INTELLIGENCE

CVE-2026-83869

CVSS score9.8 CRITICAL
EPSS probability0.82%
CISA KEVNot currently listed
Published2026-10-13
Last modified2026-10-16
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Description

Integer underflow (wrap or wraparound) in DNS Server allows an unauthorized attacker to execute code over a network.

Weakness classification

  • secure@microsoft.com: CWE-191

Primary references