CVE-2026-56189
HighCVSS 7.8Exploitation Probability (EPSS)
Low risk39th percentile - higher than 39% of all known CVEs
Summary
A heap-based buffer overflow in Microsoft Windows Media Foundation allows an unauthorized attacker to execute code locally.
Risk Assessment
An attacker with local access can execute arbitrary code in the system context, potentially leading to privilege escalation and full system compromise.
Recommendation
Install the latest Windows security updates from Microsoft that address this vulnerability.
Other vulnerabilities in Microsoft Windows Media Foundation
See all- CVE-2026-96952High
Heap-based buffer overflow in Microsoft Windows Media Foundation allows an unauthorized attacker to execute code over a network.
- CVE-2026-96186High
A deserialization of untrusted data vulnerability in Microsoft Windows Media Foundation allows an authenticated attacker to elevate privileges locally. The flaw arises from unsafe deserialization of untrusted data.
- CVE-2026-70278High
Heap-based buffer overflow in Microsoft Windows Media Foundation allows an authorized attacker to elevate privileges locally.
- CVE-2026-70258High
Heap-based buffer overflow in Microsoft Windows Media Foundation allows an unauthorized attacker to execute code over a network.
- CVE-2026-70131High
Heap-based buffer overflow in Microsoft Windows Media Foundation allows an unauthorized attacker to elevate privileges locally.
- CVE-2026-85814Critical
Heap-based buffer overflow in Microsoft Windows Media Foundation allows an unauthorized attacker to execute code over a network.
- CVE-2026-83517Critical
Heap-based buffer overflow in Microsoft Windows Media Foundation allows an unauthorized attacker to execute code over a network.
- CVE-2026-69408Critical
Integer overflow or wraparound in Microsoft Windows Media Foundation allows an unauthorized attacker to execute code over a network.
- CVE-2026-69601High
Heap-based buffer overflow in Microsoft Windows Media Foundation allows an unauthorized attacker to execute code over a network.
- CVE-2026-62744High
Heap-based buffer overflow in Microsoft Windows Media Foundation allows an unauthorized attacker to execute code over a network.
Original NVD description (English source)
Heap-based buffer overflow in Microsoft Windows Media Foundation allows an unauthorized attacker to execute code locally.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS