RHEL 9 : gstreamer1-plugins-bad-free and gstreamer1-plugins-ugly-free (RHSA-2026:55865)

high Nessus Plugin ID 337344

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Synopsis

The remote Red Hat host is missing one or more security updates for gstreamer1-plugins-bad-free / gstreamer1-plugins- ugly-free.

Description

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:55865 advisory.

GStreamer is a streaming media framework based on graphs of filters which operate on media data. The gstreamer1-plugins-bad-free package contains a collection of plug-ins for GStreamer.

Security Fix(es):

* gstreamer: gstreamer1-plugins-bad-free: gstreamer: heap out-of-bounds write in adpcmdec IMA/DVI ADPCM decoder (CVE-2026-19387)

* gstreamer: gstreamer1-plugins-ugly-free: gstreamer: integer overflow/underflow in asfdemux bounds checks leading to out-of-bounds read (CVE-2026-19389)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

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

Solution

Update the RHEL gstreamer1-plugins-bad-free / gstreamer1-plugins-ugly-free packages based on the guidance in RHSA-2026:55865.

Plugin Details

Severity: High

ID: 337344

File Name: redhat-RHSA-2026-55865.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Red Hat Local Security Checks

Published: 8/18/2026

Updated: 8/18/2026

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.9

Percentile: 52.61

Vendor

Vendor Severity: Important

CVSS v2

Risk Factor: High

Base Score: 9

Temporal Score: 6.7

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:C

CVSS Score Source: CVE-2026-19387

CVSS v3

Risk Factor: High

Base Score: 7.6

Temporal Score: 6.6

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:redhat:enterprise_linux:9, cpe:/o:redhat:rhel_eus:9.8, p-cpe:/a:redhat:enterprise_linux:gstreamer1-plugins-bad-free-devel, p-cpe:/a:redhat:enterprise_linux:gstreamer1-plugins-bad-free-libs, p-cpe:/a:redhat:enterprise_linux:gstreamer1-plugins-bad-free, p-cpe:/a:redhat:enterprise_linux:gstreamer1-plugins-ugly-free

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu

Exploit Ease: No known exploits are available

Patch Publication Date: 8/17/2026

Vulnerability Publication Date: 8/10/2026

Reference Information

CVE: CVE-2026-19387, CVE-2026-19389

CWE: 190, 787

RHSA: 2026:55865

Detections

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