CVE-2026-2923
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Out-of-Bounds Write in GStreamer DVB Subtitles Enables RCE

Publication date: 2026-03-16

Last updated on: 2026-03-17

Assigner: Zero Day Initiative

Description
GStreamer DVB Subtitles 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 handling of coordinates. 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-28838.
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Meta Information
Published
2026-03-16
Last Modified
2026-03-17
Generated
2026-06-16
AI Q&A
2026-03-16
EPSS Evaluated
2026-06-15
NVD
CVE-2026-2923
EUVD
EUVD-2026-12119
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
gstreamer gstreamer to 1.28.1 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-787 The product writes data past the end, or before the beginning, of the intended buffer.
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Executive Summary

[{'type': 'paragraph', 'content': "CVE-2026-2923 is a remote code execution vulnerability in GStreamer's handling of DVB subtitles. The flaw arises from improper validation of user-supplied coordinate data, leading to an out-of-bounds write past the end of an allocated buffer."}, {'type': 'paragraph', 'content': 'Exploiting this vulnerability requires interaction with the GStreamer library, though attack vectors may vary depending on the implementation. Successful exploitation allows an attacker to execute arbitrary code within the context of the current process.'}] [1]

Impact Analysis

This vulnerability can allow a remote attacker to execute arbitrary code on affected installations of GStreamer.

Because the attacker can run code in the context of the current process, this could lead to full compromise of the affected system or application, including unauthorized access, data manipulation, or disruption of service.

Compliance Impact

I don't know

Detection Guidance

I don't know

Mitigation Strategies

To mitigate this vulnerability, you should update GStreamer to the latest version where the issue has been addressed and corrected.

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