CVE WatchNov 9, 2026

CVE-2026-121611

A flaw was found in GStreamer's gst-plugins-bad package. A use of uninitialized memory vulnerability exists in the H.265 (HEVC) bitstream pa

CVSS

6.5

Medium

EPSS

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KEV

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Exploit Today

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0-100

Published: Nov 9, 2026 · Last modified: Nov 9, 2026 · CWE-457

EPSS · 30d

Not enough EPSS history yet.

Technical description

A flaw was found in GStreamer's gst-plugins-bad package. A use of uninitialized memory vulnerability exists in the H.265 (HEVC) bitstream parser when processing Video Parameter Sets that declare more than one HRD (Hypothetical Reference Decoder) parameter set. A remote attacker could exploit this by providing a crafted H.265 media file or stream that, when processed by an application using GStreamer, causes unpredictable parser behavior and may crash the application. This can lead to a denial of service for any application using GStreamer to play back H.265 content.

Official references

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