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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.

PUBLISHED Reserved 2026-04-01 | Published 2026-04-06 | Updated 2026-04-07 | Assigner GitHub_M




HIGH: 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Problem types

CWE-125: Out-of-bounds Read

Product status

< 435dcbcbbf700fd63b2ca9eac6cef3b5ea75169d
affected

References

github.com/...diaKit/security/advisories/GHSA-gxr3-fwc7-q99h

github.com/...ommit/435dcbcbbf700fd63b2ca9eac6cef3b5ea75169d

cve.org (CVE-2026-35203)

nvd.nist.gov (CVE-2026-35203)

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