CVE-2026-100220: Windows Media Video Decoder Remote Code Execution Vulnerability
Published Oct 13, 2026
·Updated
Heap-based buffer overflow in Windows Media Video Decoder allows an unauthorized attacker to execute code over a network.
Other sources
Windows Media Video Decoder Remote Code Execution Vulnerability
— Microsoft
Affected Software
58 affected componentsFixes available
Microsoft Windows Server 2025<10.0.26100.33650
10.0.26100.33650
Microsoft Windows Server 2012 R2<6.3.9600.23470
6.3.9600.23470
Microsoft Windows Server 2016<10.0.14393.9612
10.0.14393.9612
Microsoft Windows Server 2025<10.0.26100.33650
10.0.26100.33650
Microsoft Windows Server 2022<10.0.20348.5761
10.0.20348.5761
Microsoft Windows Server 2022<10.0.20348.5761
10.0.20348.5761
Microsoft Windows Server 2019<10.0.17763.9376
10.0.17763.9376
Microsoft Windows Server 2012 R2<6.3.9600.23470
6.3.9600.23470
Microsoft Windows Server 2019<10.0.17763.9376
10.0.17763.9376
Microsoft Windows Server 2016<10.0.14393.9612
10.0.14393.9612
Microsoft Windows Server 2012<6.2.9200.26434
6.2.9200.26434
Microsoft Windows Server 2012<6.2.9200.26434
6.2.9200.26434
Microsoft Windows 10 1607<10.0.14393.9612
Microsoft Windows 10 1607<10.0.14393.9612
Microsoft Windows 10 1809<10.0.17763.9376
Microsoft Windows 10 1809<10.0.17763.9376
Microsoft Windows 10 21h2<10.0.19044.7807
Microsoft Windows 10 21h2<10.0.19044.7807
Microsoft Windows 10 21h2<10.0.19044.7807
Microsoft Windows 10 22h2<10.0.19045.7807
Microsoft Windows 10 22h2<10.0.19045.7807
Microsoft Windows 10 22h2<10.0.19045.7807
Microsoft Windows 11 23h2<10.0.22631.7652
Microsoft Windows 11 23h2<10.0.22631.7652
Microsoft Windows 11 24h2<10.0.26100.9711
Microsoft Windows 11 24h2<10.0.26100.9711
Microsoft Windows 11 25h2<10.0.26200.9711
Microsoft Windows 11 25h2<10.0.26200.9711
Microsoft Windows 11 26h1<10.0.28000.3231
Microsoft Windows 11 26h1<10.0.28000.3231
Microsoft Windows 11 26h2<10.0.26300.9711
Microsoft Windows 11 26h2<10.0.26300.9711
Microsoft Windows Server 2012
Microsoft Windows Server 2012=r2
Microsoft Windows Server 2016<10.0.14393.9612
Microsoft Windows Server 2019<10.0.17763.9376
Microsoft Windows Server 2022<10.0.20348.5761
Microsoft Windows Server 2025<10.0.26100.33650
Microsoft Windows 11=24H2, >=10.0.26100<10.0.26100.9711
10.0.26100.9711
Microsoft Windows 10=22H2, >=10.0.19045<10.0.19045.7807
10.0.19045.7807
Microsoft Windows 11=25H2, >=10.0.26200<10.0.26200.9711
10.0.26200.9711
Microsoft Windows 11=26H1, >=10.0.28000<10.0.28000.3231
10.0.28000.3231
Microsoft Windows 10=1809, >=10.0.17763<10.0.17763.9376
10.0.17763.9376
Microsoft Windows 11=24H2, >=10.0.26100<10.0.26100.9711
10.0.26100.9711
Microsoft Windows 11=26H1, >=10.0.28000<10.0.28000.3231
10.0.28000.3231
Microsoft Windows 11=26H2, >=10.0.26300<10.0.26300.9711
10.0.26300.9711
Microsoft Windows 11=26H2, >=10.0.26300<10.0.26300.9711
10.0.26300.9711
Microsoft Windows 10=22H2, >=10.0.19045<10.0.19045.7807
10.0.19045.7807
Microsoft Windows 11=23H2, >=10.0.22631<10.0.22631.7652
10.0.22631.7652
Microsoft Windows 11=25H2, >=10.0.26200<10.0.26200.9711
10.0.26200.9711
Microsoft Windows 11=23H2, >=10.0.22631<10.0.22631.7652
10.0.22631.7652
Microsoft Windows 10=22H2, >=10.0.19045<10.0.19045.7807
10.0.19045.7807
Microsoft Windows 10=21H2, >=10.0.19044<10.0.19044.7807
10.0.19044.7807
Microsoft Windows 10=21H2, >=10.0.19044<10.0.19044.7807
10.0.19044.7807
Microsoft Windows 10=1809, >=10.0.17763<10.0.17763.9376
10.0.17763.9376
Microsoft Windows 10=21H2, >=10.0.19044<10.0.19044.7807
10.0.19044.7807
Microsoft Windows 10=1607, >=10.0.14393<10.0.14393.9612
10.0.14393.9612
Microsoft Windows 10=1607, >=10.0.14393<10.0.14393.9612
10.0.14393.9612
Remediation
Event History
Oct 13, 2026
CVE Published
via Microsoft·02:00 PM
Data Sourced
via Microsoft·02:00 PM
DescriptionSeverityWeaknessAffected Software
CVE Published
via MITRE·07:01 PM
Data Sourced
via MITRE·07:01 PM
DescriptionSeverity
Data Sourced
via NVD·07:17 PM
RemedyDescriptionSeverityWeaknessAffected Software
Frequently Asked Questions
1
Does exploitation require an attacker to have an account or existing privileges?
No. The vector is rated as requiring no privileges, so the attacker does not need an authenticated account or pre-existing access.
2
Is user interaction required for exploitation?
Yes. The CVSS vector indicates that user interaction is required, meaning exploitation depends on a user action.
3
What systems are identified as affected?
The listed affected software includes Microsoft Windows 10, Windows 11, Windows Server 2012, Windows Server 2012 R2, Windows Server 2016, Windows Server 2019, Windows Server 2022, and Windows Server 2025.
4
What could a successful compromise allow?
The vulnerability is rated High for confidentiality, integrity, and availability impact. Successful exploitation could therefore expose data, enable modification of data or systems, and disrupt service availability.