CVE-2026-53704

A flaw was found in GStreamer's RealMedia demuxer in the gst-plugins-ugly package. When processing a RealMedia file containing a specially crafted FILEINFO metadata section, the demuxer parses variable-name and variable-value pairs using re_skip_pascal_string() without validating that offsets remain within the mapped buffer. Additionally, the element count controlling the parsing loop is read from attacker-controlled data without validation, which can cause an infinite loop. A crafted RealMedia file can cause the application to crash, hang, or potentially read limited adjacent memory contents.

CVSS v3 7.1 HIGH

7.1^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 4.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://access.redhat.com/errata/RHSA-2026:36673
https://access.redhat.com/errata/RHSA-2026:36674
https://access.redhat.com/errata/RHSA-2026:50688
https://access.redhat.com/errata/RHSA-2026:50691
https://access.redhat.com/security/cve/CVE-2026-53704
https://bugzilla.redhat.com/show_bug.cgi?id=2487614

Configurations

No configuration.

History

No history.

Information

Published : 2026-06-15 20:16

Updated : 2026-09-08 23:17

NVD link : CVE-2026-53704

Mitre link : CVE-2026-53704

CVE.ORG link : CVE-2026-53704

JSON object : View

Products Affected

No product.

CWE

CWE-125

Out-of-bounds Read

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