ZDI-26-283: GStreamer qtdemux Stack-based Buffer Overflow Remote Code Execution Vulnerability
A stack-based buffer overflow vulnerability exists in the GStreamer qtdemux component when parsing UncompressedFrameConfigBox structures. This flaw allows remote attackers to execute arbitrary code by exploiting improper validation of user-supplied data length before copying it to a fixed-length stack buffer. GStreamer has issued an update to address this vulnerability. The vulnerability has a CVSS score of 7.8 and is rated critical.
AI Analysis
Technical Summary
CVE-2026-5056 is a stack-based buffer overflow vulnerability in the GStreamer qtdemux library component. The issue arises from insufficient validation of the length of user-supplied data in UncompressedFrameConfigBox structures before copying it to a fixed-length stack buffer. This can lead to remote code execution in the context of the current process. Exploitation requires interaction with the vulnerable library, but attack vectors may vary depending on implementation. The Zero Day Initiative assigned a CVSS score of 7.8. GStreamer has released an update to fix this vulnerability.
Potential Impact
Successful exploitation allows remote attackers to execute arbitrary code with the privileges of the affected process. This can lead to full compromise of the application using the vulnerable GStreamer qtdemux component, including potential data loss, system control, or further attacks.
Mitigation Recommendations
GStreamer has issued an official update that corrects this vulnerability. Users and administrators should apply the update promptly to remediate the issue. Patch status is confirmed by the vendor advisory linked in the source content.
ZDI-26-283: GStreamer qtdemux Stack-based Buffer Overflow Remote Code Execution Vulnerability
Description
A stack-based buffer overflow vulnerability exists in the GStreamer qtdemux component when parsing UncompressedFrameConfigBox structures. This flaw allows remote attackers to execute arbitrary code by exploiting improper validation of user-supplied data length before copying it to a fixed-length stack buffer. GStreamer has issued an update to address this vulnerability. The vulnerability has a CVSS score of 7.8 and is rated critical.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-5056 is a stack-based buffer overflow vulnerability in the GStreamer qtdemux library component. The issue arises from insufficient validation of the length of user-supplied data in UncompressedFrameConfigBox structures before copying it to a fixed-length stack buffer. This can lead to remote code execution in the context of the current process. Exploitation requires interaction with the vulnerable library, but attack vectors may vary depending on implementation. The Zero Day Initiative assigned a CVSS score of 7.8. GStreamer has released an update to fix this vulnerability.
Potential Impact
Successful exploitation allows remote attackers to execute arbitrary code with the privileges of the affected process. This can lead to full compromise of the application using the vulnerable GStreamer qtdemux component, including potential data loss, system control, or further attacks.
Mitigation Recommendations
GStreamer has issued an official update that corrects this vulnerability. Users and administrators should apply the update promptly to remediate the issue. Patch status is confirmed by the vendor advisory linked in the source content.
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: 05/26/2026, 20:03:31 UTC
Last enriched: 07/30/2026, 07:02:53 UTC
Last updated: 07/31/2026, 19:22:59 UTC
Views: 88
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