Is there a public exploit for CVE-2026-86476?

Yes. Proof-of-concept code for CVE-2026-86476 has been published publicly.

Is there a proof of concept for CVE-2026-86476?

Yes — 1 proof-of-concept entry is linked on this page, from public repositories and community submissions. They are listed for authorised testing only.

How severe is CVE-2026-86476?

CVE-2026-86476 scores CVSS 8.4 (v3.1), rated high. EPSS puts the chance of exploitation in the next 30 days at 0.22%.

What does CVE-2026-86476 affect?

CVE-2026-86476 affects Red Hat Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 10.2 Extended Update Support.

8.4 High

A flaw was found in gst-plugins-base.

CVE-2026-86476

A flaw was found in gst-plugins-base. A heap buffer overflow can be triggered when processing video buffers whose attached GstVideoMeta metadata declares plane strides and offsets that exceed the actual backing memory allocation. The metadata is not range-checked during deserialization, and the video frame mapping code does not verify that the declared plane geometry fits within the buffer before allowing consumers to read or write video data. A local attacker who controls the sending side of a GStreamer inter-process IPC pipeline can deliver a crafted buffer carrying fabricated strides, causing the receiving process to read or write beyond heap boundaries. Successful exploitation can cause a denial of service or potentially allow code execution within the affected process.

Proof-of-concept code is published

Public PoC

Public PoC0xSemizzz/CVE-2026-86476

Signals come from Exploit-DB, Metasploit, Nuclei and published proof-of-concept repositories. Their absence means nothing was found, not that nothing exists.

Assessment

CVSS: 8.4 (v3.1)
Severity: High
EPSS: 0.22% chance of exploitation in the next 30 days
Known exploited: Not listed in CISA KEV
Exploit availability: Public PoC
Published: 14 October 2026
Last updated: 11 November 2026
Affected: Red Hat · Red Hat Enterprise Linux 10 · Red Hat Enterprise Linux 10.2 Extended Update Support
Assigner: redhat

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

At the source

EUVD (ENISA)

References

Community proofs of concept

No community proof of concept yet. If you have one for a published vulnerability and the right to share it, add it below — it will appear here once reviewed.

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