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No exploitation reportedAwaiting NVD analysis

CVE-2026-125704

Gstreamer: gstreamer: use-after-free in gstreamer core buffer value deserialization

No exploitation reported by the sources we read.

  • Published2026-11-10
  • WeaknessCWE-416

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

A use-after-free flaw was found in GStreamer core buffer value deserialization. When crafted serialized buffer data contains an invalid character, an error path frees a mapped buffer before unmapping it. An application that parses untrusted caps or structure data could crash; a network-facing GStreamer Data Protocol receiver can process such data without user interaction. Further impact has not been established.

Timeline

dates in UTC
  1. 2026-11-1010:43CVE publishedCNA

Versions per branch

Products declared by the CNA

As redhat, the CNA that assigned this CVE, declared them in the CVE record; versions as written. NVD lists no product for this CVE yet: this is the only product data so far.

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2026-11-10

Neither OSV.dev nor the vendor advisories we read list affected versions for CVE-2026-125704 yet.

Full record on NVD

Fix

No fix published by the sources we read yet. NVD record

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Metasploit modules
none listed
Metasploit Framework

Sources

  • CNACVSS 3.17.52026-11-10
  • NVDCVSS 3.17.5read 2026-11-10
  • CNAweakness (CWE)CWE-4162026-11-10
  • NVDweakness (CWE)CWE-416read 2026-11-10
  • GitHub Advisoriesadvisory—

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
2026-11-10
Last Modified
2026-11-10
NVD status
Awaiting Analysis
GitHub Advisory
GHSA-hc85-6x4f-g38q

Frequently asked questions

What is CVE-2026-125704?

A use-after-free flaw was found in GStreamer core buffer value deserialization. When crafted serialized buffer data contains an invalid character, an error path frees a mapped buffer before unmapping it. An application that parses untrusted caps or structure data could crash; a network-facing GStreamer Data Protocol receiver can process such data without user interaction. Further impact has not been established.

Is CVE-2026-125704 actively exploited?

Active exploitation of CVE-2026-125704 has not been confirmed.

What is the CVSS score for CVE-2026-125704?

CVE-2026-125704 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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