CVE-2026-56189: Microsoft Windows Media Foundation Remote Code Execution Vulnerability
Published Jul 14, 2026
·Updated
Heap-based buffer overflow in Microsoft Windows Media Foundation allows an unauthorized attacker to execute code locally.
Other sources
Microsoft Windows Media Foundation Remote Code Execution Vulnerability
— Microsoft
Affected Software
43 affected componentsFixes available
Microsoft Windows Media Foundation
Microsoft Windows Server 2012 R2<6.3.9600.23291
6.3.9600.23291
Microsoft Windows Server 2012 R2<6.3.9600.23291
6.3.9600.23291
Microsoft Windows Server 2016<10.0.14393.9339
10.0.14393.9339
Microsoft Windows Server 2016<10.0.14393.9339
10.0.14393.9339
Microsoft Windows Server 2012<6.2.9200.26226
6.2.9200.26226
Microsoft Windows 10=1607
10.0.14393.9339
Microsoft Windows 11=26H1
10.0.28000.2525
Microsoft Windows Server 2012<6.2.9200.26226
6.2.9200.26226
Microsoft Windows 10=1607
10.0.14393.9339
Microsoft Windows 11=26H1
10.0.28000.2525
Microsoft Windows Server 2025<10.0.26100.33158
10.0.26100.33158
Microsoft Windows 11=24H2
10.0.26100.8875
Microsoft Windows 11=25H2
10.0.26200.8875
Microsoft Windows 11=25H2
10.0.26200.8875
Microsoft Windows 10=22H2
10.0.19045.7548
Microsoft Windows 11=24H2
10.0.26100.8875
Microsoft Windows Server 2025<10.0.26100.33158
10.0.26100.33158
Microsoft Windows 10=22H2
10.0.19045.7548
Microsoft Windows Server 2019<10.0.17763.9020
10.0.17763.9020
Microsoft Windows 10=21H2
10.0.19044.7548
Microsoft Windows Server 2022<10.0.20348.5386
10.0.20348.5386
Microsoft Windows 10=1809
10.0.17763.9020
Microsoft Windows Server 2019<10.0.17763.9020
10.0.17763.9020
Microsoft Windows 10=21H2
10.0.19044.7548
Microsoft Windows 10=21H2
10.0.19044.7548
Microsoft Windows 10=22H2
10.0.19045.7548
Microsoft Windows 10=1809
10.0.17763.9020
Microsoft Windows 10 1607<10.0.14393.9339
Microsoft Windows 10 1607<10.0.14393.9339
Microsoft Windows 10 1809<10.0.17763.9020
Microsoft Windows 10 1809<10.0.17763.9020
Microsoft Windows 10 21h2<10.0.19044.7548
Microsoft Windows 10 22h2<10.0.19045.7548
Microsoft Windows 11 24h2<10.0.26100.8875
Microsoft Windows 11 25h2<10.0.26200.8875
Microsoft Windows 11 26h1<10.0.28000.2525
Microsoft Windows Server 2012
Microsoft Windows Server 2012=r2
Microsoft Windows Server 2016<10.0.14393.9339
Microsoft Windows Server 2019<10.0.17763.9020
Microsoft Windows Server 2022<10.0.20348.5386
Microsoft Windows Server 2025<10.0.26100.33158
Remediation
Event History
Jul 14, 2026
CVE Published
via Microsoft·02:00 PM
Data Sourced
via Microsoft·02:00 PM
DescriptionSeverityWeakness
Data Sourced
via Microsoft·02:00 PM
Affected Software
Updated
via Microsoft·02:00 PM
Affected Software
Updated
via Microsoft·02:00 PM
Description
CVE Published
via MITRE·05:09 PM
Data Sourced
via MITRE·05:09 PM
DescriptionSeverity
Data Sourced
via NVD·06:18 PM
RemedyDescriptionSeverityWeaknessAffected Software
Frequently Asked Questions
1
Which systems should be prioritized for remediation?
Systems running the listed Microsoft Windows 10, Windows 11, or Windows Server versions should be prioritized, especially where users may open or process untrusted media content. The vulnerability can result in high impacts to confidentiality, integrity, and availability.
2
What does an attacker need to exploit this issue?
The attacker does not require prior privileges, but exploitation requires local access and user interaction. The provided data does not specify the exact interaction or media content needed.
3
Is a fix available?
Yes. A patch is available for this vulnerability.