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Gstreamer CVE-2026-2920

| EUVDEUVD-2026-12113 HIGH
Heap-based Buffer Overflow (CWE-122)
2026-03-13 zdi
Buffer Overflow RCE Heap Overflow Gstreamer
7.8
CVSS 3.1 · Vendor: zdi
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Severity by source

Vendor (zdi) PRIMARY
7.8 HIGH
AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
SUSE
HIGH
qualitative
Red Hat
7.8 HIGH
qualitative

Primary rating from Vendor (zdi).

CVSS VectorVendor: zdi

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

3
EUVD ID Assigned
Mar 13, 2026 - 21:01 euvd
EUVD-2026-12113
Analysis Generated
Mar 13, 2026 - 21:01 vuln.today
CVE Published
Mar 13, 2026 - 20:38 nvd
HIGH 7.8

DescriptionCVE.org

GStreamer ASF Demuxer 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 stream headers within ASF files. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-28843.

AnalysisAI

Heap-based buffer overflow vulnerability in GStreamer's ASF Demuxer component that allows remote attackers to execute arbitrary code when processing malicious ASF media files. The vulnerability requires user interaction (opening/processing a malicious file) and affects all versions of GStreamer based on the CPE data. No evidence of active exploitation (not in KEV) or public proof-of-concept exists, though Zero Day Initiative tracked it as ZDI-CAN-28843.

Technical ContextAI

GStreamer is an open-source multimedia framework (CPE: cpe:2.3:a:gstreamer:gstreamer:*:*:*:*:*:*:*:*) widely used in Linux applications for media playback. The vulnerability occurs in the ASF (Advanced Systems Format) demuxer when parsing stream headers from ASF files - a format commonly used for Windows Media files. The root cause is CWE-122 (Heap-based Buffer Overflow), where the demuxer fails to validate the length of user-supplied data before copying it to a fixed-size heap buffer, allowing an attacker to overflow the buffer and potentially overwrite adjacent memory structures.

RemediationAI

Apply the patch available at https://gitlab.freedesktop.org/gstreamer/gstreamer/-/commit/37d7991168a223d0810fd1f4493ec6a8b6a510d3. Update to the latest version of GStreamer that includes this fix. As a workaround, avoid processing ASF files from untrusted sources, implement sandboxing for media processing applications, and consider disabling ASF format support if not required. Monitor distribution-specific security updates as they will likely backport this fix.

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Same weakness CWE-122 – Heap-based Buffer Overflow

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Same technique Buffer Overflow

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Vendor StatusVendor

SUSE

Severity: High
Product Status
Container suse/sl-micro/6.0/baremetal-os-container:2.1.3-6.70 Container suse/sl-micro/6.0/base-os-container:2.1.3-7.38 Container suse/sl-micro/6.0/kvm-os-container:2.1.3-6.62 Container suse/sl-micro/6.0/rt-os-container:2.1.3-7.72 Image SL-Micro Affected
Container suse/sl-micro/6.0/toolbox:13.2-9.23 Affected
Image SL-Micro-EC2 Image SUSE-Multi-Linux-Manager-Proxy-BYOS-EC2 Image SUSE-Multi-Linux-Manager-Server-Azure-ltd Image SUSE-Multi-Linux-Manager-Server-BYOS-EC2 Image SUSE-Multi-Linux-Manager-Server-EC2-llc Image SUSE-Multi-Linux-Manager-Server-EC2-ltd Affected
SUSE Liberty Linux 10 Fixed
SUSE Liberty Linux 8 Fixed

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CVE-2026-2920 vulnerability details – vuln.today
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