CVE-2026-69405

MEDIUM CVSS 3.1: 5.7 EPSS 0.65%
Updated Sep 25, 2026
Microsoft
Parameter Value
CVSS 5.7 (MEDIUM)
Affected Versions before 10.0.26100.33438
Fixed In 10.0.14393.9512
Type CWE-401 (Memory Leak)
Vendor Microsoft
Public PoC No

Missing release of memory after effective lifetime in Windows DHCP Server allows an authorized attacker to deny service over an adjacent network.

Attack Parameters

Attack Vector
Adjacent
Requires local network access
Attack Complexity
Low
Easy to exploit
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
None
No data leak
Integrity
None
No data modification
Availability
High
Complete denial of service

CVSS Vector v3.1

Weakness Type (CWE)

Vulnerable Products 10

Configuration From (including) Up to (excluding)
Microsoft Windows_10_1607
cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x64:*
— 10.0.14393.9512
Microsoft Windows_10_1607
cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x86:*
— 10.0.14393.9512
Microsoft Windows_10_1809
cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x64:*
— 10.0.17763.9245
Microsoft Windows_10_1809
cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x86:*
— 10.0.17763.9245
Microsoft Windows_Server_2012
cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*
— —
Microsoft Windows_Server_2012
cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*
— —
Microsoft Windows_Server_2016
cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:*
— 10.0.14393.9512
Microsoft Windows_Server_2019
cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*
— 10.0.17763.9245
Microsoft Windows_Server_2022
cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:*
— 10.0.20348.5622
Microsoft Windows_Server_2025
cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*
— 10.0.26100.33438