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Critical · CVSS 9.8CVE-2026-111183

GStreamer rtpL16depay Heap-based Buffer Overflow Remote Code Execution VulnerabilityCVE-2026-111183

Answer in brief

CVE-2026-111183 records a Critical severity (CVSS 9.8) vulnerability in GStreamer rtpL16depay Heap-based Buffer Overflow Remote Code Execution Vulnerability. The current sources do not mark it as known exploited. The current feed maps GStreamer/GStreamer (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 21, 2026Updated Oct 21, 2026Source checked Oct 21, 2026First seen by HOL Oct 21, 2026Material review Oct 21, 2026
Upstream Advisory

Key facts

Risk
Critical · CVSS 9.8
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Not reported

Why this deserves its current priority

CVSS is 9.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps GStreamer/GStreamer (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
GStreamer/GStreamergeneric5903987091bb25e4f549331032cd2e3494cf8daeNot reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for GStreamer/GStreamer.
  2. 2Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

  1. Published upstream

    Oct 21, 2026

    Evidence: source:cvelist:source_dates:source-dates:record
  2. Source modified

    Oct 21, 2026

    Evidence: source:cvelist:source_dates:source-dates:record
  3. First seen by HOL

    Oct 21, 2026

Sources and claim methodology

  • Source referencegitlab.freedesktop.org
  • Source referencezerodayinitiative.com
Upstream source description

GStreamer rtpL16depay Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of GStreamer. Interaction with this library is required to exploit this vulnerability but attack vectors may vary depending on the implementation. The specific flaw exists within the processing of RTP payload elements. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-31143.

Quoted source text, attributed separately from HOL analysis.

Record context

Vulnerability class
RCE
EPSS
Not reported
CWE IDs
CWE-122
Source
CVE List V5
Source checked
Oct 21, 2026
References
2 linked sources
Open source record