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GStreamer CVE-2026-52722

| EUVDEUVD-2026-36804 HIGH
Integer Overflow or Wraparound (CWE-190)
2026-06-15 redhat GHSA-cj3w-jxwm-h5h8
Information Disclosure Integer Overflow Red Hat Enterprise Linux 10 Red Hat Enterprise Linux 6 Red Hat Enterprise Linux 7 Red Hat Enterprise Linux 8 Red Hat Enterprise Linux 9 Red Hat
7.1
CVSS 3.1 · Vendor: redhat
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Severity by source

Vendor (redhat) PRIMARY
7.1 HIGH
AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
vuln.today AI
7.1 HIGH

Network-delivered crafted file (AV:N) decoded with no privileges (PR:N) but requires the user to open it (UI:R); OOB read yields low confidentiality and high availability impact, no integrity effect.

3.1 AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
4.0 AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N
SUSE
HIGH
qualitative
Red Hat
7.1 HIGH
qualitative

Primary rating from Vendor (redhat).

CVSS VectorVendor: redhat

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
High

Lifecycle Timeline

2
Analysis Generated
Jun 15, 2026 - 19:52 vuln.today
CVE Published
Jun 15, 2026 - 19:15 cve.org
HIGH 7.1

DescriptionCVE.org

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. A remote attacker could trick a user into opening a specially crafted VMnc file, potentially causing a crash or information disclosure.

AnalysisAI

Out-of-bounds read in GStreamer's VMnc decoder allows remote attackers to crash the application or disclose memory contents when a victim opens a maliciously crafted VMnc video file. The flaw stems from a signed integer overflow in payload-size arithmetic that bypasses a length check when cursor dimensions are abnormally large. No public exploit identified at time of analysis, and the issue is not listed in CISA KEV.

Technical ContextAI

GStreamer is a widely deployed open-source multimedia framework used across Linux desktops, embedded systems, and applications such as media players, browsers, and screen-recording tools. The affected component is the VMnc decoder, which parses the VMware-developed VMnc (VMware VNC) screen-capture codec. The root cause is CWE-190 (Integer Overflow or Wraparound): when a VMnc stream declares large cursor width/height values, the multiplication used to compute the payload size overflows a signed integer, producing a small or negative result that satisfies a downstream length check while the actual data read extends past the allocated buffer, leading to out-of-bounds memory reads. Red Hat CPE data scopes the impact across Red Hat Enterprise Linux 6 through 10, since GStreamer is shipped as a core multimedia stack in those distributions.

RemediationAI

No vendor-released patch version was identified in the input at time of analysis; defenders should monitor the Red Hat advisory at https://access.redhat.com/security/cve/CVE-2026-52722 and the upstream GStreamer work item at https://gitlab.freedesktop.org/gstreamer/gstreamer/-/work_items/5107 and apply the fixed gstreamer-plugins packages once published by their distribution (yum/dnf update gstreamer1-plugins-* on RHEL hosts). Until a patch ships, the highest-value compensating control is to disable or remove the VMnc decoder plugin specifically - on RHEL this typically lives in gstreamer1-plugins-bad-free; uninstalling that subpackage prevents auto-loading of vmncdec at the cost of also disabling other 'bad' codecs used by some media players. As a narrower mitigation, administrators can blacklist the vmncdec element via GST_PLUGIN_FEATURE_RANK=vmncdec:NONE or by removing the libgstvmnc.so file from the plugin directory, which preserves other codecs but breaks legitimate VMnc playback (rare outside VMware screen-recording workflows). User-facing guidance - do not open VMnc files from untrusted sources and disable automatic thumbnail/preview generation for unknown video files - reduces UI:R exposure but is not a substitute for patching.

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Same weakness CWE-190 – Integer Overflow or Wraparound

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Vendor StatusVendor

SUSE

Severity: Important
Product Status
SUSE Linux Enterprise Desktop 15 SP7 Affected
SUSE Linux Enterprise High Performance Computing 15 SP7 Affected
SUSE Linux Enterprise Module for Basesystem 15 SP7 Affected
SUSE Linux Enterprise Module for Desktop Applications 15 SP7 Affected
SUSE Linux Enterprise Module for Package Hub 15 SP7 Affected

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CVE-2026-52722 vulnerability details – vuln.today
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