CVE-2021-26881: Microsoft Windows Media Foundation Remote Code Execution Vulnerability
Microsoft Windows Media Foundation Remote Code Execution Vulnerability
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 6.3.9600.19968Patch KB5000853 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 6.2.9200.23298Patch KB5000840 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 6.1.7601.24566Patch KB5000851 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 6.3.9600.19968Patch KB5000848 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.14393.4283Patch KB5000803 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.19043.867Patch KB5000802 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.10240.18874Patch KB5000807 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.18363.1440Patch KB5000808 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.17763.1817Patch KB5000822 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.17134.2087Patch KB5000809
Event History
Frequently Asked Questions
Which systems should be prioritized for remediation?
Prioritize systems running the listed affected Windows client and server products: Windows 10, Windows 7, Windows RT 8.1, Windows Server 2012, Windows Server 2012 R2, Windows Server 2016, and Windows Server 2019.
What level of access does an attacker need before exploiting this issue?
The CVSS vector indicates that an attacker needs low privileges (PR:L). Exploitation is network-based (AV:N), requires no user interaction (UI:N), and has high complexity (AC:H).
What is the potential impact if exploitation succeeds?
Successful exploitation can result in remote code execution. The CVSS metrics indicate high impact to confidentiality, integrity, and availability.