CVE-2026-111183
Received Received - Intake

Heap-based Buffer Overflow in GStreamer rtpL16depay

Vulnerability report for CVE-2026-111183, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.

Publication date: 2026-10-21

Last updated on: 2026-10-23

Assigner: Zero Day Initiative

Description

GStreamer rtpL16depay Heap-based Buffer Overflow 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 proper validation of the length of user-supplied data prior to copying it to a heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-31143.

CVSS Scores

EPSS Scores

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Meta Information

Published
2026-10-21
Last Modified
2026-10-23
Generated
2026-11-10
AI Q&A
2026-10-22
EPSS Evaluated
2026-11-09
NVD
EUVD

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
GStreamer GStreamer 5903987091bb25e4f549331032cd2e3494cf8dae

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-122 A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().

Attack-Flow Graph

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Executive Summary

This is a heap-based buffer overflow vulnerability in GStreamer's rtpL16depay plugin. It occurs when processing RTP payload elements due to improper validation of user-supplied data length before copying to a heap buffer. Attackers can exploit this to execute arbitrary code remotely on affected systems without authentication.

Detection Guidance

To detect this vulnerability, inspect systems running GStreamer for the presence of the vulnerable rtpL16depay plugin. Check GStreamer versions against the patched commit referenced in the advisory. Monitor network traffic for malformed RTP payloads targeting GStreamer implementations.

Impact Analysis

This vulnerability allows remote attackers to execute arbitrary code on your system with the same privileges as the GStreamer process. Since it requires no authentication and has a CVSS score of 9.8, it poses a critical risk of full system compromise, potentially leading to data theft, malware installation, or system takeover.

Mitigation Strategies

Apply the patch provided by GStreamer immediately. Update all GStreamer installations to the fixed version. If patching is not immediately possible, disable the rtpL16depay plugin or restrict network access to GStreamer services until patched.

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