CVE-2026-20936: Windows NDIS Information Disclosure Vulnerability

Published Jan 13, 2026
·
Updated

Out-of-bounds read in Windows NDIS allows an authorized attacker to disclose information with a physical attack.

Other sources

Windows NDIS Information Disclosure Vulnerability

Microsoft

Affected Software

96 affected componentsFixes available
Microsoft Windows Server 2022, 23H2 Edition
Microsoft Windows Server 2025
Microsoft Windows 10=22H2
Microsoft Windows 10=22H2
Microsoft Windows 10=21H2
Microsoft Windows 10=22H2
Microsoft Windows 10=21H2
Microsoft Windows 11=23H2
Microsoft Windows 10=21H2
Microsoft Windows 11=25H2
Microsoft Windows 11=25H2
Microsoft Windows 11=23H2
Microsoft Windows Server 2012 R2
Microsoft Windows Server 2012 R2
Microsoft Windows Server 2012
Microsoft Windows Server 2008
Microsoft Windows Server 2016
Microsoft Windows Server 2016
Microsoft Windows 10=1607
Microsoft Windows Server 2012
Microsoft Windows Server 2008 R2
Microsoft Windows 10=1607
Microsoft Windows Server 2025
Microsoft Windows Server 2008
Microsoft Windows Server 2008 R2
Microsoft Windows Server 2008
Microsoft Windows 11=24H2
Microsoft Windows Server 2008
Microsoft Windows 11=24H2
Microsoft Windows Server 2019
Microsoft Windows Server 2022
Microsoft Windows 10=1809
Microsoft Windows Server 2019
Microsoft Windows 10=1809
Microsoft Windows Server 2022
Microsoft Windows 10 1607<10.0.14393.8783
Microsoft Windows 10 1607<10.0.14393.8783
Microsoft Windows 10 1809<10.0.17763.8276
Microsoft Windows 10 1809<10.0.17763.8276
Microsoft Windows 10 21h2<10.0.19044.6809
Microsoft Windows 10 21h2<10.0.19044.6809
Microsoft Windows 10 21h2<10.0.19044.6809
Microsoft Windows 10 22h2<10.0.19045.6809
Microsoft Windows 10 22h2<10.0.19045.6809
Microsoft Windows 10 22h2<10.0.19045.6809
Microsoft Windows 11 23h2<10.0.22631.6491
Microsoft Windows 11 23h2<10.0.22631.6491
Microsoft Windows 11 24h2<10.0.26100.7623
Microsoft Windows 11 24h2<10.0.26100.7623
Microsoft Windows 11 25h2<10.0.26200.7623
Microsoft Windows 11 25h2<10.0.26200.7623
Microsoft Windows Server 2008=sp2
Microsoft Windows Server 2008=sp2
Microsoft Windows Server 2008=r2-sp1
Microsoft Windows Server 2012
Microsoft Windows Server 2012=r2
Microsoft Windows Server 2016<10.0.14393.8783
Microsoft Windows Server 2019<10.0.17763.8276
Microsoft Windows Server 2022<10.0.20348.4648
Microsoft Windows Server 2022 23h2<10.0.25398.2092
Microsoft Windows Server 2025<10.0.26100.32230
Microsoft Windows Server 2022, 23H2 Edition<10.0.25398.2092
10.0.25398.2092
Microsoft Windows 11=23H2
10.0.22631.6491
Microsoft Windows 11=25H2
10.0.26200.7623
Microsoft Windows 11=23H2
10.0.22631.6491
Microsoft Windows 11=25H2
10.0.26200.7623
Microsoft Windows 10=22H2
10.0.19045.6809
Microsoft Windows 10=22H2
10.0.19045.6809
Microsoft Windows 10=21H2
10.0.19044.6809
Microsoft Windows 10=21H2
10.0.19044.6809
Microsoft Windows 10=22H2
10.0.19045.6809
Microsoft Windows Server 2025<10.0.26100.32230
10.0.26100.32230
Microsoft Windows Server 2012 R2<6.3.9600.22968
6.3.9600.22968
Microsoft Windows Server 2012 R2<6.3.9600.22968
6.3.9600.22968
Microsoft Windows Server 2012<6.2.9200.25868
6.2.9200.25868
Microsoft Windows 10=21H2
10.0.19044.6809
Microsoft Windows Server 2008 R2<6.1.7601.28117
6.1.7601.28117
Microsoft Windows Server 2008<6.0.6003.23717
6.0.6003.23717
Microsoft Windows Server 2016<10.0.14393.8783
10.0.14393.8783
Microsoft Windows Server 2008 R2<6.1.7601.28117
6.1.7601.28117
Microsoft Windows Server 2008<6.0.6003.23717
6.0.6003.23717
Microsoft Windows Server 2008<6.0.6003.23717
6.0.6003.23717
Microsoft Windows Server 2016<10.0.14393.8783
10.0.14393.8783
Microsoft Windows Server 2012<6.2.9200.25868
6.2.9200.25868
Microsoft Windows 10=1607
10.0.14393.8783
Microsoft Windows 11=24H2
10.0.26100.7623
Microsoft Windows Server 2008<6.0.6003.23717
6.0.6003.23717
Microsoft Windows Server 2025<10.0.26100.32230
10.0.26100.32230
Microsoft Windows Server 2022<10.0.20348.4648
10.0.20348.4648
Microsoft Windows 10=1607
10.0.14393.8783
Microsoft Windows Server 2019<10.0.17763.8276
10.0.17763.8276
Microsoft Windows Server 2022<10.0.20348.4648
10.0.20348.4648
Microsoft Windows 10=1809
10.0.17763.8276
Microsoft Windows 11=24H2
10.0.26100.7623
Microsoft Windows 10=1809
10.0.17763.8276
Microsoft Windows Server 2019<10.0.17763.8276
10.0.17763.8276

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 10.0.25398.2092Patch KB5073450
  2. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 10.0.22631.6491Patch KB5073455
  3. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 10.0.26200.7623Patch KB5074109
  4. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 10.0.19045.6809Patch KB5073724
  5. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 10.0.19044.6809Patch KB5073724
  6. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 10.0.26100.32230Patch KB5073379
  7. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 6.3.9600.22968Patch KB5073696
  8. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 6.2.9200.25868Patch KB5073698
  9. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 6.0.6003.23717Patch KB5073700
  10. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 6.1.7601.28117Patch KB5073699
  11. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 10.0.14393.8783Patch KB5073722
  12. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 10.0.26100.7623Patch KB5074109
  13. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 10.0.20348.4648Patch KB5073457
  14. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 10.0.17763.8276Patch KB5073723

Event History

Jan 13, 2026
CVE Published
via Microsoft·08:00 AM
Data Sourced
via Microsoft·08:00 AM
DescriptionSeverityWeaknessAffected Software
Updated
via Microsoft·08:00 AM
Affected Software
Updated
via Microsoft·04:00 PM
Description
CVE Published
via MITRE·05:57 PM
Data Sourced
via MITRE·05:57 PM
DescriptionSeverity
Data Sourced
via NVD·06:16 PM
DescriptionSeverityWeaknessAffected Software
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Frequently Asked Questions

1

What is the severity of CVE-2026-20936?

CVE-2026-20936 is classified as a medium severity vulnerability.

2

Who is affected by CVE-2026-20936?

CVE-2026-20936 affects various Windows products including Windows 10, Windows 11, and Windows Server 2012 R2.

3

How do I fix CVE-2026-20936?

To fix CVE-2026-20936, you need to install the latest security updates provided by Microsoft.

4

What type of vulnerability is CVE-2026-20936?

CVE-2026-20936 is an information disclosure vulnerability that allows an authorized attacker to access sensitive information.

5

Can CVE-2026-20936 be exploited remotely?

No, CVE-2026-20936 requires a physical attack to be exploited.

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