CVE-2026-18299: GStreamer rtpsbcdepay Use-After-Free Remote Code Execution Vulnerability
GStreamer rtpsbcdepay Use-After-Free 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 RTP payload elements. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-29787.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Compensating control
Was ZDI-CAN-29787: apply compensating controls by restricting network access to GStreamer endpoints that accept RTP traffic so remote attackers cannot reach the vulnerable rtpsbcdepay RTP payload processing.
Event History
Frequently Asked Questions
What must an attacker do to exploit this issue?
An attacker must cause an affected application to process RTP payload elements through the vulnerable GStreamer library. User interaction with the library is required, and the exact delivery vector depends on how the application implements GStreamer.
What privileges and impact are associated with successful exploitation?
No attacker privileges are required, but user interaction is required. Successful exploitation can execute arbitrary code in the context of the current process, with high confidentiality, integrity, and availability impact.
Which deployments are most relevant to triage?
Deployments that use GStreamer and process RTP payload elements are the relevant exposure set. The provided information does not establish whether all default GStreamer configurations invoke the affected functionality.