What is CVE-2026-35203?

CVE-2026-35203 is a high-severity vulnerability in Zlmediakit, classified under Out-of-bounds Read. CVSS score: 7.5/10. Published 2026-04-06.

How severe is CVE-2026-35203?

High severity. CVSS v3 base score is 7.5 out of 10.

Out-of-bounds Read in Zlmediakit

CVE-2026-35203

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 buf…

Vulnerability class: Buffer Overflow

EPSS: 0.001 (23.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Zlmediakit — versions < 435dcbcbbf700fd63b2ca9eac6cef3b5ea75169d

Weakness classification (CWE)

CWE-125 — Out-of-bounds Read

References

https://github.com/ZLMediaKit/ZLMediaKit/security/advisories/GHSA-gxr3-fwc7-q99h (x_refsource_CONFIRM)
https://github.com/ZLMediaKit/ZLMediaKit/commit/435dcbcbbf700fd63b2ca9eac6cef3b5ea75169d (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-35203?: CVE-2026-35203 is a high-severity vulnerability in Zlmediakit, classified under Out-of-bounds Read. CVSS score: 7.5/10. Published 2026-04-06.
How severe is CVE-2026-35203?: High severity. CVSS v3 base score is 7.5 out of 10.