Heap-based buffer overflow in gst-plugins-bad and gstreamer - CVE-2026-59691

CSH
CYBERSECURITY HELP
Sign In REGISTER
 
Main Vulnerability Database Vulnerabilities #VU141118

Heap-based buffer overflow in gst-plugins-bad and gstreamer - CVE-2026-59691

Published: August 6, 2026


Vulnerability identifier: #VU141118
CSH Severity: High
CVSS v4: 8.4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-59691
CWE-ID: CWE-122
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to execute arbitrary code.

The vulnerability exists due to heap-based buffer overflow in rfbsrc element RFB decoder when decoding crafted framebuffer updates from a VNC server. A remote attacker can operate a crafted VNC server and send framebuffer updates with specific pixel formats and encoding types to execute arbitrary code.

This may also cause a crash, denial of service, or data corruption in the client application.


Affected software

gst-plugins-bad
gstreamer
Anolis OS
Red Hat CodeReady Linux Builder for IBM z Systems
Red Hat CodeReady Linux Builder for ARM 64
Red Hat Enterprise Linux for x86_64
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux for ARM 64
Red Hat CodeReady Linux Builder for x86_64
Red Hat CodeReady Linux Builder for Power, little endian
Red Hat Enterprise Linux Server - AUS
Red Hat Enterprise Linux Server - TUS
Red Hat CodeReady Linux Builder for ARM 64 - Extended Update Support
Red Hat CodeReady Linux Builder for IBM z Systems - Extended Update Support
Red Hat CodeReady Linux Builder for Power, little endian - Extended Update Support
Red Hat CodeReady Linux Builder for x86_64 - Extended Update Support
Red Hat Enterprise Linux for ARM 64 - Extended Update Support
Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Red Hat Enterprise Linux for x86_64 - Extended Update Support
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions
gstreamer-plugins-bad-free (Red Hat package)
gstreamer1-plugins-bad-free (Red Hat package)
gstreamer1-plugins-bad-free-libs
gstreamer1-plugins-bad-free-devel
gstreamer1-plugins-bad-free
gstreamer1-plugins-bad-free-doc

How to mitigate CVE-2026-59691

Install security update from vendor's website.

gst-plugins-bad - update to 1.28.5
gstreamer - update to 1.28.5
gstreamer-plugins-bad-free (Red Hat package) - update to 0.10.23-26.el7_9
gstreamer1-plugins-bad-free (Red Hat package) - addressed in versions 1.10.4-7.el7_9, 1.16.1-4.el8_4.4, 1.16.1-4.el8_6.4, 1.16.1-4.el8_8.4, 1.16.1-9.el8_10.1, 1.18.4-9.el9_2.5, 1.22.1-6.el9_4.6, 1.24.11-3.el10_0.6, 1.26.7-2.el10_2.6
gstreamer1-plugins-bad-free-libs - addressed in versions 1.22.12-7.0.1, 1.28.5-1
gstreamer1-plugins-bad-free-devel - addressed in versions 1.22.12-7.0.1, 1.28.5-1
gstreamer1-plugins-bad-free - addressed in versions 1.22.12-7.0.1, 1.28.5-1
gstreamer1-plugins-bad-free-doc - update to 1.28.5-1

External References

Related Security Bulletins