Multiple out-of-bounds read vulnerabilities were found in GStreamer's pcapparse element. Malformed PCAP records can trigger reads beyond buffer boundaries during IPv4/TCP header parsing. This element is primarily used in debugging pipelines, limiting real-world exposure. A local attacker could trick a user into processing a specially crafted PCAP file, potentially leading to a crash or information disclosure.

An update of the gst package has been released.

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the 4e82a0e6-6801-42c6-8fb6-91b6b275a9e1 advisory.

    The GStreamer project reports:
    Multiple security issues were identified and fixed in the GStreamer framework.

Tenable has extracted the preceding description block directly from the FreeBSD security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - Multiple out-of-bounds read vulnerabilities were found in GStreamer's pcapparse element. Malformed PCAP     records can trigger reads beyond buffer boundaries during IPv4/TCP header parsing. This element is     primarily used in debugging pipelines, limiting real-world exposure. A local attacker could trick a user     into processing a specially crafted PCAP file, potentially leading to a crash or information disclosure.
    (CVE-2026-52721)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Severity
324987	Photon OS 4.0: Gst PHSA-2026-4.0-1045	Nessus	PhotonOS Local Security Checks	high
323684	FreeBSD : gstreamer1 -- multiple vulnerabilities (4e82a0e6-6801-42c6-8fb6-91b6b275a9e1)	Nessus	FreeBSD Local Security Checks	high
321136	Linux Distros Unpatched Vulnerability : CVE-2026-52721	Nessus	Misc.	medium

Detections

Analytics

CVE-2026-52721

medium

Tenable Plugins

high

high

medium