CVE-2021-34439
HighCVSS 7.8Exploitation Probability (EPSS)
High risk83th percentile - higher than 83% of all known CVEs
Summary
Remote code execution vulnerability in Microsoft Windows Media Foundation. An attacker could exploit this vulnerability to execute code in the context of the logged-on user.
Risk Assessment
Risk of taking control of the user's system if they open a specially crafted media file.
Recommendation
Install security updates released by Microsoft.
Other vulnerabilities in Windows Media Foundation
See all- CVE-2020-1136High
Memory corruption vulnerability in Windows Media Foundation due to improper handling of objects in memory. An attacker could install programs, view/change/delete data, or create new accounts with full user rights.
- CVE-2020-1126High
Memory corruption vulnerability in Windows Media Foundation when improperly handling objects in memory. An attacker could exploit this vulnerability to install programs, view, change, or delete data, or create new accounts with full user rights.
- CVE-2020-1028High
Memory corruption vulnerability in Windows Media Foundation due to improper handling of objects in memory. An attacker could install programs, view/change/delete data, or create new accounts with full user rights.
- CVE-2026-69511High
Heap-based buffer overflow in Microsoft Windows Media Foundation allows an unauthorized attacker to execute code over a network.
- CVE-2026-69386High
Heap-based buffer overflow in Microsoft Windows Media Foundation allows an unauthorized attacker to execute code over a network.
- CVE-2026-57094High
Heap-based buffer overflow vulnerability in Windows Media Foundation. An unauthorized attacker can remotely execute code.
- CVE-2026-57090High
Heap-based buffer overflow vulnerability in Windows Media Foundation. An unauthorized attacker can remotely execute code.
- CVE-2026-57087High
Heap-based buffer overflow in Microsoft Windows Media Foundation allows an unauthorized attacker to execute code over a network.
- CVE-2026-58610High
Heap-based buffer overflow in Microsoft Windows Media Foundation allows an unauthorized attacker to execute code locally.
- CVE-2026-54993High
A heap-based buffer overflow in Microsoft Windows Media Foundation allows an unauthorized attacker to execute code locally.
Original NVD description (English source)
Microsoft Windows Media Foundation Remote Code Execution Vulnerability
Vulnerability data from NVD (NIST) · CISA KEV · EPSS