ZDI-26-283: GStreamer qtdemux 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 ZDI has assigned a CVSS rating of 7.8. The following CVEs are assigned: CVE-2026-5056.
AI Analysis
Technical Summary
CVE-2026-5056 is a stack-based buffer overflow vulnerability in the GStreamer qtdemux element. The vulnerability arises from insufficient validation of the length of user-supplied data when parsing UncompressedFrameConfigBox structures, leading to a buffer overflow on the stack. This can be exploited remotely to execute arbitrary code within the process running GStreamer. The vulnerability requires the attacker to interact with the affected library, with attack vectors depending on the implementation context. The Zero Day Initiative assigned a CVSS score of 7.8 (AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H). GStreamer has released an official update to fix this vulnerability.
Potential Impact
Successful exploitation allows remote attackers to execute arbitrary code with the privileges of the process using the vulnerable GStreamer library. This can lead to full compromise of the affected system or application. The vulnerability affects confidentiality, integrity, and availability (all rated high impact).
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 mitigation steps are indicated by the vendor advisory.
ZDI-26-283: GStreamer qtdemux Stack-based Buffer Overflow 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-2026-5056.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-5056 is a stack-based buffer overflow vulnerability in the GStreamer qtdemux element. The vulnerability arises from insufficient validation of the length of user-supplied data when parsing UncompressedFrameConfigBox structures, leading to a buffer overflow on the stack. This can be exploited remotely to execute arbitrary code within the process running GStreamer. The vulnerability requires the attacker to interact with the affected library, with attack vectors depending on the implementation context. The Zero Day Initiative assigned a CVSS score of 7.8 (AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H). GStreamer has released an official update to fix this vulnerability.
Potential Impact
Successful exploitation allows remote attackers to execute arbitrary code with the privileges of the process using the vulnerable GStreamer library. This can lead to full compromise of the affected system or application. The vulnerability affects confidentiality, integrity, and availability (all rated high impact).
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 mitigation steps are indicated by the vendor advisory.
Technical Details
- Article Source
- {"url":"http://www.zerodayinitiative.com/advisories/ZDI-26-283/","fetched":true,"fetchedAt":"2026-05-26T19:58:15.104Z","wordCount":203}
Threat ID: 6a15fc93e29bf47b5055e03f
Added to database: 5/26/2026, 8:03:31 PM
Last enriched: 5/26/2026, 8:08:12 PM
Last updated: 5/27/2026, 4:58:48 AM
Views: 2
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