CVE-2026-57094
Summary
by MITRE • 07/14/2026
Heap-based buffer overflow in Microsoft Windows Media Foundation allows an unauthorized attacker to execute code over a network.
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Analysis
by VulDB Data Team • 07/14/2026
This vulnerability represents a critical heap-based buffer overflow within Microsoft Windows Media Foundation component that enables remote code execution when exploited by unauthorized attackers. The flaw exists in how the media foundation handles certain malformed multimedia files or streams, specifically when processing specific codec data structures that exceed allocated memory boundaries. This type of vulnerability falls under the CWE-121 heap-based buffer overflow category where insufficient boundary checking allows attackers to overwrite adjacent memory locations on the heap. The vulnerability is particularly dangerous because it can be triggered through network-based attacks without requiring local system access, making it a prime target for remote exploitation campaigns.
The technical implementation of this vulnerability occurs when Windows Media Foundation processes multimedia content that contains specially crafted malicious data within codec parameters or metadata fields. Attackers can construct malicious media files or stream content that, when processed by the vulnerable component, causes memory corruption in the heap allocation regions. This memory corruption can overwrite function pointers, return addresses, or other critical control data structures, enabling attackers to redirect execution flow and ultimately execute arbitrary code within the context of the affected process. The attack vector typically involves web browsing, email attachments, or streaming media content where the vulnerable component automatically processes user-supplied media data without adequate validation.
From an operational impact perspective, successful exploitation of this vulnerability can result in complete system compromise, allowing attackers to gain unauthorized access to affected systems and execute malicious code with the privileges of the compromised service account. The vulnerability affects multiple Windows operating systems including windows 10, windows server 2016, and other supported versions where Media Foundation is present. This makes it particularly concerning for enterprise environments as it can be leveraged through various attack surfaces including web applications, email systems, and media streaming services. The exploitability of this vulnerability is enhanced by the fact that Media Foundation is widely used across Microsoft products and third-party applications that rely on Windows media processing capabilities.
Security mitigations for this vulnerability should include immediate patch deployment from Microsoft security updates, which typically address the heap overflow through proper boundary checking and memory management controls. Organizations should implement network segmentation to limit exposure of systems running Media Foundation components and consider disabling unnecessary media processing capabilities where possible. The use of application whitelisting solutions and exploit mitigation techniques such as data execution prevention can provide additional layers of protection against exploitation attempts. Security monitoring should focus on detecting unusual media file processing activities or network traffic patterns that might indicate exploitation attempts, with particular attention to web-based attack vectors that could leverage this vulnerability through browser-based media playback scenarios. This vulnerability aligns with several ATT&CK techniques including T1203 Exploitation for Client Execution and T1059 Command and Scripting Interpreter, making it a significant concern for cybersecurity teams implementing defensive measures across enterprise environments.