ZDI-26-170: GStreamer H.266 Codec Parser 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 ZDI has assigned a CVSS rating of 7.8. The following CVEs are assigned: CVE-2026-3086.
AI Analysis
Technical Summary
The GStreamer H.266 codec parser contains a vulnerability (CVE-2026-3086) where improper validation of APS units leads to a write past the end of an allocated buffer. This out-of-bounds write can be exploited by remote attackers to execute arbitrary code on systems using affected versions of GStreamer. Exploitation requires interaction with the vulnerable library, but attack vectors may vary depending on implementation. The vulnerability has been assigned a CVSS score of 7.8 by the Zero Day Initiative. An official patch has been released by GStreamer to remediate this issue.
Potential Impact
Successful exploitation allows remote attackers to execute arbitrary code with the privileges of the process running GStreamer, potentially leading to full compromise of the affected system or application. The vulnerability affects confidentiality, integrity, and availability as indicated by the CVSS vector (C:H/I:H/A:H).
Mitigation Recommendations
An official patch has been released by GStreamer to correct this vulnerability. Users and administrators should apply the update provided by GStreamer as soon as possible to mitigate the risk. No additional vendor advisories indicate further mitigation steps or that no action is required.
ZDI-26-170: GStreamer H.266 Codec Parser Out-Of-Bounds Write Remote Code Execution Vulnerability
Description
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 ZDI has assigned a CVSS rating of 7.8. The following CVEs are assigned: CVE-2026-3086.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The GStreamer H.266 codec parser contains a vulnerability (CVE-2026-3086) where improper validation of APS units leads to a write past the end of an allocated buffer. This out-of-bounds write can be exploited by remote attackers to execute arbitrary code on systems using affected versions of GStreamer. Exploitation requires interaction with the vulnerable library, but attack vectors may vary depending on implementation. The vulnerability has been assigned a CVSS score of 7.8 by the Zero Day Initiative. An official patch has been released by GStreamer to remediate this issue.
Potential Impact
Successful exploitation allows remote attackers to execute arbitrary code with the privileges of the process running GStreamer, potentially leading to full compromise of the affected system or application. The vulnerability affects confidentiality, integrity, and availability as indicated by the CVSS vector (C:H/I:H/A:H).
Mitigation Recommendations
An official patch has been released by GStreamer to correct this vulnerability. Users and administrators should apply the update provided by GStreamer as soon as possible to mitigate the risk. No additional vendor advisories indicate further mitigation steps or that no action is required.
Technical Details
- Article Source
- {"url":"http://www.zerodayinitiative.com/advisories/ZDI-26-170/","fetched":true,"fetchedAt":"2026-05-26T20:01:53.989Z","wordCount":203}
Threat ID: 6a15fc94e29bf47b5055e513
Added to database: 5/26/2026, 8:03:32 PM
Last enriched: 5/26/2026, 8:25:54 PM
Last updated: 5/27/2026, 4:51:24 AM
Views: 2
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