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CVE-2026-52722 Red Hat CVE debrief

CVE-2026-52722 is a HIGH severity vulnerability in GStreamer's VMnc decoder. A remote attacker could trick a user into opening a specially crafted VMnc file, potentially causing a crash or information disclosure. The vulnerability has a CVSS score of 7.1 and was published on [cvePublishedAt](https://www.cve.org/CVERecord?id=CVE-2026-52722).

Vendor
Red Hat
Product
Red Hat Enterprise Linux 10
CVSS
HIGH 7.1
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-15
Original CVE updated
2026-08-03
Advisory published
2026-06-15
Advisory updated
2026-08-03

Who should care

Users of GStreamer's VMnc decoder, particularly those who handle VMnc files from untrusted sources, should be aware of this vulnerability and take steps to mitigate it.

Technical summary

A signed integer overflow vulnerability was found in GStreamer's VMnc decoder. A crafted VMnc stream with large cursor dimensions can overflow signed integer payload-size arithmetic, bypassing a length check and leading to out-of-bounds reads.

Defensive priority

HIGH

Recommended defensive actions

  • Apply patches or updates from the vendor as soon as they become available.
  • Be cautious when opening VMnc files from untrusted sources.
  • Consider using alternative decoders or media players that are not vulnerable to this issue.

Evidence notes

The CVE record [cve-org] and NVD detail [nvd] provide further information about this vulnerability. Additional references can be found at [ref-4], [ref-5], and [ref-6].

Sources and references

Verified primary and authoritative sources

  • CVE-2026-52722 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-52722

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-52722 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-52722

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.