ZLMediaKit is a streaming media service framework. the VP9 RTP payload parser in ext-codec/VP9Rtp.cpp reads multiple fields from the RTP payload based on flag bits in the first byte, without verifying that sufficient data exists in the buffer. A crafted VP9 RTP packet with a 1-byte payload (0xFF, all flags set) causes the parser to read past the end of the allocated buffer, resulting in a heap-buffer-overflow. This vulnerability is fixed with commit 435dcbcbbf700fd63b2ca9eac6cef3b5ea75169d.
History

Mon, 06 Apr 2026 20:00:00 +0000

Type Values Removed Values Added
Description ZLMediaKit is a streaming media service framework. the VP9 RTP payload parser in ext-codec/VP9Rtp.cpp reads multiple fields from the RTP payload based on flag bits in the first byte, without verifying that sufficient data exists in the buffer. A crafted VP9 RTP packet with a 1-byte payload (0xFF, all flags set) causes the parser to read past the end of the allocated buffer, resulting in a heap-buffer-overflow. This vulnerability is fixed with commit 435dcbcbbf700fd63b2ca9eac6cef3b5ea75169d.
Title ZLMediaKit VP9 RTP Parser Out-of-Bounds Read
Weaknesses CWE-125
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2026-04-06T19:54:45.052Z

Updated: 2026-04-06T19:54:45.052Z

Reserved: 2026-04-01T18:48:58.937Z

Link: CVE-2026-35203

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-04-06T20:16:28.057

Modified: 2026-04-06T20:16:28.057

Link: CVE-2026-35203

cve-icon Redhat

No data.