CVE-2026-3086
Out-of-Bounds Write in GStreamer H.266 Parser Enables RCE
Publication date: 2026-03-16
Last updated on: 2026-03-17
Assigner: Zero Day Initiative
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| gstreamer | gstreamer | to 1.28.1 (exc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-787 | The product writes data past the end, or before the beginning, of the intended buffer. |
Attack-Flow Graph
AI Powered Q&A
What immediate steps should I take to mitigate this vulnerability?
To mitigate this vulnerability, you should update GStreamer to the latest version where this issue has been addressed and corrected.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
How can this vulnerability be detected on my network or system? Can you suggest some commands?
I don't know
Can you explain this vulnerability to me?
CVE-2026-3086 is a remote code execution vulnerability in the GStreamer H.266 codec parser related to the processing of APS units.
The flaw occurs because of improper validation of user-supplied data, which leads to an out-of-bounds write past the end of an allocated buffer.
Exploiting this vulnerability requires interaction with the GStreamer library, and attack methods may vary depending on how it is implemented.
If successfully exploited, an attacker can execute arbitrary code within the context of the current process.
How can this vulnerability impact me? :
This vulnerability allows remote attackers to execute arbitrary code on affected systems running the GStreamer H.266 codec parser.
Successful exploitation can lead to full compromise of the affected process, potentially allowing attackers to take control of the system or cause denial of service.
Because the vulnerability involves out-of-bounds memory writes, it can be leveraged to run malicious code, steal data, or disrupt normal operations.