CVE-2026-3081
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Stack-based Buffer Overflow in GStreamer H.266 Codec Enables RCE

Publication date: 2026-03-16

Last updated on: 2026-03-17

Assigner: Zero Day Initiative

Description
GStreamer H.266 Codec Parser Stack-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 parsing of decoding units. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-28839.
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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-2026-3081
EUVD
EUVD-2026-12121
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-121 A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).
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Executive Summary

CVE-2026-3081 is a stack-based buffer overflow vulnerability in the GStreamer H.266 codec parser. It occurs because the software does not properly validate the length of user-supplied data before copying it into a fixed-length buffer on the stack during the parsing of decoding units.

This flaw allows remote attackers to execute arbitrary code on affected systems by exploiting the improper data validation, potentially taking control of the process running the GStreamer library.

Impact Analysis

This vulnerability can allow an attacker to execute arbitrary code remotely on your system with the privileges of the process running the GStreamer library.

Successful exploitation could lead to full compromise of the affected application, potentially allowing data theft, system manipulation, or further attacks within your environment.

Compliance Impact

I don't know

Detection Guidance

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Mitigation Strategies

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

Since the vulnerability arises from the GStreamer H.266 codec parser, avoiding or disabling the use of this codec parser until the update is applied can reduce risk.

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