CVE-2026-44803: Windows Graphics Component Remote Code Execution Vulnerability

Published Jun 9, 2026
·
Updated

Integer overflow or wraparound in Windows Win32K - GRFX allows an unauthorized attacker to execute code locally.

Other sources

Windows Graphics Component Remote Code Execution Vulnerability

— Microsoft

Affected Software

70 affected componentsFixes available
Microsoft PowerPoint for Android
Microsoft Excel for Android
Microsoft Word for Android
Microsoft Windows Server 2012 R2
Patch available
Microsoft Windows Server 2012 R2
Patch available
Microsoft Windows Server 2012
Patch available
Microsoft Windows Server 2012
Patch available
Microsoft Windows 10=1607
Patch available
Microsoft Windows Server 2016
Patch available
Microsoft Windows Server 2016
Patch available
Microsoft Excel Android
Microsoft Powerpoint Android
Microsoft Word Android
Microsoft Windows 10 1607<10.0.14393.9234
Microsoft Windows 10 1607<10.0.14393.9234
Microsoft Windows 10 1809<10.0.17763.8880
Microsoft Windows 10 1809<10.0.17763.8880
Microsoft Windows 10 21h2<10.0.19044.7417
Microsoft Windows 10 21h2<10.0.19044.7417
Microsoft Windows 10 21h2<10.0.19044.7417
Microsoft Windows 10 22h2<10.0.19045.7417
Microsoft Windows 10 22h2<10.0.19045.7417
Microsoft Windows 10 22h2<10.0.19045.7417
Microsoft Windows 11 23h2<10.0.22631.7219
Microsoft Windows 11 23h2<10.0.22631.7219
Microsoft Windows 11 24h2<10.0.26100.8655
Microsoft Windows 11 24h2<10.0.26100.8655
Microsoft Windows 11 25h2<10.0.26200.8655
Microsoft Windows 11 25h2<10.0.26200.8655
Microsoft Windows 11 26h1<10.0.28000.2269
Microsoft Windows 11 26h1<10.0.28000.2269
Microsoft Windows Server 2012
Microsoft Windows Server 2012=r2
Microsoft Windows Server 2016<10.0.14393.9234
Microsoft Windows Server 2019<10.0.17763.8880
Microsoft Windows Server 2022<10.0.20348.5256
Microsoft Windows Server 2025<10.0.26100.32995
Microsoft Windows 11=26H1
10.0.28000.2269
Microsoft Windows Server 2025<10.0.26100.32995
10.0.26100.32995
Microsoft Windows 11=26H1
10.0.28000.2269
Microsoft Windows 11=24H2
10.0.26100.8655
Microsoft Windows 10=1607
10.0.14393.9234
Microsoft Windows 11=23H2
10.0.22631.7219
Microsoft Windows 11=23H2
10.0.22631.7219
Microsoft Windows 11=25H2
10.0.26200.8655
Microsoft Windows 11=24H2
10.0.26100.8655
Microsoft Windows 11=25H2
10.0.26200.8655
Microsoft Windows Server 2025<10.0.26100.32995
10.0.26100.32995
Microsoft Windows 10=22H2
10.0.19045.7417
Microsoft Windows 10=22H2
10.0.19045.7417
Microsoft Word for Android<16.0.20131.20024
16.0.20131.20024
Microsoft PowerPoint for Android<16.0.20131.20024
16.0.20131.20024
Microsoft Windows Server 2012 R2<6.3.9600.23228
6.3.9600.23228
Microsoft Excel for Android<16.0.20131.20024
16.0.20131.20024
Microsoft Windows Server 2012<6.2.9200.26132
6.2.9200.26132
Microsoft Windows Server 2012<6.2.9200.26132
6.2.9200.26132
Microsoft Windows Server 2016<10.0.14393.9234
10.0.14393.9234
Microsoft Windows Server 2016<10.0.14393.9234
10.0.14393.9234
Microsoft Windows 10=22H2
10.0.19045.7417
Microsoft Windows 10=1607
10.0.14393.9234
Microsoft Windows Server 2012 R2<6.3.9600.23228
6.3.9600.23228
Microsoft Windows 10=21H2
10.0.19044.7417
Microsoft Windows 10=21H2
10.0.19044.7417
Microsoft Windows Server 2022<10.0.20348.5256
10.0.20348.5256
Microsoft Windows Server 2019<10.0.17763.8880
10.0.17763.8880
Microsoft Windows 10=21H2
10.0.19044.7417
Microsoft Windows Server 2022<10.0.20348.5256
10.0.20348.5256
Microsoft Windows Server 2019<10.0.17763.8880
10.0.17763.8880
Microsoft Windows 10=1809
10.0.17763.8880
Microsoft Windows 10=1809
10.0.17763.8880

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 10.0.28000.2269Patch KB5095051
  2. Upgrade

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

    Fixed in 10.0.26100.32995Patch KB5094125
  3. Upgrade

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

    Fixed in 10.0.14393.9234Patch KB5094122
  4. Upgrade

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

    Fixed in 10.0.26100.8655Patch KB5094126
  5. Upgrade

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

    Fixed in 10.0.22631.7219Patch KB5093998
  6. Upgrade

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

    Fixed in 10.0.26200.8655Patch KB5094126
  7. Upgrade

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

    Fixed in 10.0.19045.7417Patch KB5094127
  8. Upgrade

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

    Fixed in 16.0.20131.20024
  9. Upgrade

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

    Fixed in 6.3.9600.23228Patch KB5094041
  10. Upgrade

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

    Fixed in 6.2.9200.26132Patch KB5094042
  11. Upgrade

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

    Fixed in 10.0.19044.7417Patch KB5094127
  12. Upgrade

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

    Fixed in 10.0.20348.5256Patch KB5094128
  13. Upgrade

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

    Fixed in 10.0.17763.8880Patch KB5094123

Event History

Jun 9, 2026
CVE Published
via Microsoft·02:00 PM
Data Sourced
via Microsoft·02:00 PM
DescriptionSeverityWeaknessAffected Software
Updated
via Microsoft·02:00 PM
Affected Software
Updated
via Microsoft·02:00 PM
Description
Updated
via Microsoft·02:00 PM
DescriptionWeakness
Updated
via Microsoft·02:00 PM
WeaknessAffected Software
CVE Published
via MITRE·05:06 PM
Data Sourced
via MITRE·05:06 PM
DescriptionSeverity
Data Sourced
via NVD·05:17 PM
DescriptionSeverityWeaknessAffected Software
News Published
via Dark Reading·09:42 PM
News Published
via Dark Reading·10:02 PM
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Frequently Asked Questions

1

What is the severity of CVE-2026-44803?

CVE-2026-44803 has a high severity rating of 7.8.

2

How do I fix CVE-2026-44803?

To fix CVE-2026-44803, install the latest security updates provided by Microsoft for affected Windows versions.

3

What systems are impacted by CVE-2026-44803?

CVE-2026-44803 affects Microsoft Windows 10, Windows 11, and several versions of Windows Server.

4

What type of vulnerability is CVE-2026-44803?

CVE-2026-44803 is classified as an Integer Overflow vulnerability.

5

What can an attacker do with CVE-2026-44803?

An attacker can exploit CVE-2026-44803 to execute code locally on the affected system.

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