CVE-2026-69809

Missing release of memory after effective lifetime in Active Directory Domain Services allows an unauthorized attacker to deny service over a network.

Scoring

Severity

HIGH

CVSS base score

7.5

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C

CWE

CWE-401

Published

2026-09-08

Last modified

2026-09-09

Affected products

• Microsoft Windows 11 version 23H2
• Microsoft Windows 11 Version 23H2
• Microsoft Windows 11 Version 24H2
• Microsoft Windows 11 Version 25H2
• Microsoft Windows 11 version 26H1
• Microsoft Windows Server 2022
• Microsoft Windows Server 2025
• Microsoft Windows Server 2025 (Server Core installation)

Weakness type

• CWE-401

Related vulnerabilities

• CVE-2026-69781 — Windows DHCP Client Denial of Service Vulnerability
• CVE-2026-69497 — Windows DHCP Server Denial of Service Vulnerability
• CVE-2026-69405 — Windows DHCP Server Denial of Service Vulnerability
• CVE-2026-70065 — Windows DHCP Server Denial of Service Vulnerability
• CVE-2026-69588 — Windows TCP/IP Denial of Service Vulnerability
• CVE-2026-16028 — Protocol::HTTP2 versions before 1.14 for Perl allow memory exhaustion via closed streams that stream_state never removes from the connection stream table
• CVE-2026-18313 — rpcapd memory leak in libpcap before 1.10.7
• CVE-2026-18076 — IBM i is Affected By Multiple Vulnerabilities in Debug Server

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