CVE-2026-2922 in GStreamer
Summary
by MITRE • 03/16/2026
GStreamer RealMedia Demuxer Out-Of-Bounds Write Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of GStreamer. Interaction with this library is required to exploit this vulnerability but attack vectors may vary depending on the implementation.
The specific flaw exists within the processing of video packets. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-28845.
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Analysis
by VulDB Data Team • 04/13/2026
The CVE-2026-2922 vulnerability represents a critical out-of-bounds write flaw within the GStreamer RealMedia Demuxer component that enables remote code execution attacks. This vulnerability specifically targets the processing of video packets within the multimedia framework, where insufficient input validation allows malicious data to trigger memory corruption. The flaw manifests when the demuxer handles user-supplied video content without proper bounds checking, creating opportunities for attackers to manipulate memory layout and execute arbitrary code with the privileges of the affected application. The vulnerability is particularly concerning because GStreamer serves as a foundational multimedia framework across numerous applications and operating systems, making the attack surface extensive and impactful.
The technical implementation of this vulnerability stems from inadequate data validation practices within the RealMedia demuxer module, which falls under the broader category of buffer overflow conditions. According to CWE classification, this represents a CWE-787: Out-of-bounds Write vulnerability where the application writes data past the end of a buffer, potentially corrupting adjacent memory regions. The attack vector requires remote exploitation through the delivery of malicious video content that triggers the vulnerable code path during packet processing. The vulnerability's exploitation typically involves crafting specially formatted video packets that cause the demuxer to write beyond allocated memory boundaries, potentially overwriting critical program data or function pointers. This memory corruption can then be leveraged to redirect program execution flow and inject malicious code.
The operational impact of CVE-2026-2922 extends beyond simple code execution to encompass potential system compromise and data breaches. Attackers can exploit this vulnerability in various contexts where GStreamer is integrated, including web browsers, media players, multimedia applications, and embedded systems. The vulnerability's remote nature means that attackers need not have physical access to target systems, making it particularly dangerous in enterprise environments where multimedia content flows through various applications. The exploitation can result in complete system compromise, data exfiltration, or persistent backdoor installation. Additionally, the vulnerability's presence in widely deployed multimedia frameworks means that successful exploitation can affect thousands of systems simultaneously, creating cascading security risks across interconnected networks and applications that rely on GStreamer for media processing.
Mitigation strategies for this vulnerability should focus on immediate patching and implementation of defensive measures. Organizations must prioritize updating their GStreamer installations to versions that address the buffer overflow condition through proper input validation and bounds checking. The implementation of address space layout randomization, stack canaries, and other exploit mitigations can provide additional protection layers against exploitation attempts. Network segmentation and content filtering mechanisms should be deployed to prevent malicious video content from reaching vulnerable applications. Security monitoring should include detection of anomalous packet processing patterns that might indicate exploitation attempts. From an ATT&CK framework perspective, this vulnerability maps to techniques involving privilege escalation and persistent threats, requiring comprehensive security operations to detect and respond to potential exploitation attempts. Regular security assessments and vulnerability scanning should be conducted to identify systems running vulnerable versions of GStreamer and ensure proper remediation.