CVE-2026-86476

Heap corruption via unchecked video metadata geometry

Published Oct 14, 2026 · Updated Oct 14, 2026

Heap corruption in GStreamer gst-plugins-base before 1.28.8 allows attackers to access memory beyond video buffers via crafted metadata. GstVideoMeta deserialization accepts plane offsets and strides without checking that the described geometry fits the backing allocation. Exploitation requires a consuming application to map or copy attacker-supplied metadata from IPC or network input; the resulting memory corruption permits crashes and creates a code-execution risk within that process.

CVSS severityUnavailable
Unscored
EPSS probability0.21%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Heap corruption in GStreamer gst-plugins-base before 1.28.8 allows attackers to access memory beyond video buffers via crafted metadata. GstVideoMeta deserialization accepts plane offsets and strides without checking that the described geometry fits the backing allocation. Exploitation requires a consuming application to map or copy attacker-supplied metadata from IPC or network input; the resulting memory corruption permits crashes and creates a code-execution risk within that process.

The record

CVE
CVE-2026-86476
Published
Oct 14, 2026
Updated
Oct 14, 2026
Vendor
libuser Project
Product
Red Hat Enterprise Linux 9
Classifications
Unavailable
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Oct 14, 2026CVE publishedPublication date reported by the CVE source.
  2. Oct 14, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected versions are unavailable in this record. Check the vendor advisory for version and patch details.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

libuser Project · Red Hat Enterprise Linux 9Affected versions are unavailable in this record.
libuser Project · Red Hat Enterprise Linux 8Affected versions are unavailable in this record.
libuser Project · Red Hat Enterprise Linux 10Affected versions are unavailable in this record.
libuser Project · Red Hat Enterprise Linux 7Affected versions are unavailable in this record.
libuser Project · Red Hat Enterprise Linux 6Affected versions are unavailable in this record.

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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