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CVE-2026-20875

nvd nist
Published: Jan 13, 2026Modified: Jul 30, 2026

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7.5
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Exploitability: 3.9 / Impact: 3.6
Source: secure@microsoft.com (Secondary)

Description

Null pointer dereference in Windows Local Security Authority Subsystem Service (LSASS) allows an unauthorized attacker to deny service over a network.

Affected (19)

Microsoft
14 products
Windows 10 1607
Windows 10 1809
Windows 10 21h2
Windows 10 22h2
Windows 11 23h2
Windows 11 24h2
Windows 11 25h2
Windows Server 2008
Windows Server 2012
Windows Server 2016
Windows Server 2019
Windows Server 2022
Windows Server 2022 23h2
Windows Server 2025
Configuration A
19 vulnerable
Vulnerable SoftwareAffected Versions
Microsoft
Windows 10 1607
version < 10.0.14393.8783
Windows 10 1607
version < 10.0.14393.8783
Microsoft
Windows 10 1809
version < 10.0.17763.8276
Windows 10 1809
version < 10.0.17763.8276
Windows 10 21h2
version < 10.0.19044.6809
Windows 10 22h2
version < 10.0.19045.6809
Windows 11 23h2
version < 10.0.22631.6491
Windows 11 24h2
version < 10.0.26100.7623
Windows 11 25h2
version < 10.0.26200.7623
Microsoft
Windows Server 2008
All versions
Windows Server 2008
All versions
Windows Server 2008
Version r2 sp1
Microsoft
Windows Server 2012
All versions
Windows Server 2012
Version r2
Windows Server 2016
version < 10.0.14393.8783
Windows Server 2019
version < 10.0.17763.8276
Windows Server 2022
version < 10.0.20348.4648
Windows Server 2022 23h2
version < 10.0.25398.2092
Windows Server 2025
version < 10.0.26100.32230

Related CWEs

CWE-476
NULL Pointer Dereference
The product dereferences a pointer that it expects to be valid but is NULL.

References (1)

Source: secure@microsoft.com
Vendor Advisory

Timeline

No history available yet.