CVE-2026-52720

gst-plugins-bad1.0: A heap buffer overflow vulnerability was found in GStreamer's librfb (RFB/VNC client)

CVE-2026-52720 is fixed in 10 products on 1 platform, first by DEBIAN-CVE-2026-52720, released June 15, 2026. It is not reported as exploited. Patch Radar priority: High.

High
CVSS
8.8
high
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0064
50th percentile

A heap buffer overflow vulnerability was found in GStreamer's librfb (RFB/VNC client). The rectangle bounds check incorrectly validates area rather than individual dimensions, allowing a malicious VNC server to send a rectangle that extends beyond the framebuffer. A remote attacker could set up a malicious VNC server and trick a user into connecting, resulting in an out-of-bounds heap write that could lead to code execution or a crash.

Where it's fixed

ProductFixed inFixReleased
Linux
gst-plugins-bad1.0 · Debian 12.15 (bookworm) 1.22.0-4+deb12u8 DEBIAN-CVE-2026-52720 Jun 15, 2026
gst-plugins-bad1.0 · Debian 13.5 (trixie) 1.26.2-3+deb13u3 DEBIAN-CVE-2026-52720 Jun 15, 2026
gst-plugins-bad1.0 · Debian 14 1.28.5-1 DEBIAN-CVE-2026-52720 Jun 15, 2026
gstreamer-plugins-bad · opensuse-leap 16.0 1.26.7-160000.3.1 OPENSUSE-SU-2026:21370-1 Jul 18, 2026
gstreamer-plugins-bad · sles 15.6 1.24.0-150600.4.9.1 SUSE-SU-2026:3058-1 Jul 15, 2026
gstreamer-plugins-bad · sles 15.7 1.24.0-150600.4.9.1 SUSE-SU-2026:3058-1 Jul 15, 2026
gstreamer-plugins-bad · sles 16.0 1.26.7-160000.3.1 SUSE-SU-2026:22817-1 Jul 18, 2026
gstreamer1-plugin-openh264 · amzn 2023 1.24.10-1.amzn2023.0.6 ALAS2023-2026-1917 Jul 6, 2026
gstreamer1-plugin-openh264-debuginfo · amzn 2023 1.24.10-1.amzn2023.0.6 ALAS2023-2026-1917 Jul 6, 2026
gstreamer1-plugins-bad-free · RHEL 10 1.24.11-3.el10_0.4 RHSA-2026:47717 Jul 9, 2026
gstreamer1-plugins-bad-free · RHEL 8 0:1.16.1-8.el8_10 RHSA-2026:37130 Jul 10, 2026
gstreamer1-plugins-bad-free · RHEL 9 0:1.22.12-7.el9_8.1 RHSA-2026:36834 Jul 9, 2026
gstreamer1-plugins-bad-free · almalinux 10 1.26.7-2.el10_2.4 ALSA-2026:36749 Jul 8, 2026
gstreamer1-plugins-bad-free · almalinux 8 1.16.1-8.el8_10 ALSA-2026:37130 Jul 9, 2026
gstreamer1-plugins-bad-free · almalinux 9 1.22.12-7.el9_8.1 ALSA-2026:36834 Jul 8, 2026
gstreamer1-plugins-bad-free · amzn 2023 1.24.10-1.amzn2023.0.6 ALAS2023-2026-1917 Jul 6, 2026
gstreamer1-plugins-bad-free · ol 10 0:1.26.7-2.el10_2.4 ELSA-2026-36749 Jul 16, 2026
gstreamer1-plugins-bad-free · ol 8 0:1.16.1-8.0.1.el8_10 ELSA-2026-37130 Jul 9, 2026
gstreamer1-plugins-bad-free · ol 9 0:1.22.12-7.el9_8.1 ELSA-2026-36834 Jul 8, 2026
gstreamer1-plugins-bad-free · rocky 10 0:1.26.7-2.el10_2.4 RLSA-2026:36749 Jul 10, 2026
gstreamer1-plugins-bad-free · rocky 8 0:1.16.1-8.el8_10 RLSA-2026:37130 Jul 10, 2026
gstreamer1-plugins-bad-free · rocky 9 0:1.22.12-7.el9_8.1 RLSA-2026:36834 Jul 10, 2026
gstreamer1-plugins-bad-free-debuginfo · amzn 2023 1.24.10-1.amzn2023.0.6 ALAS2023-2026-1917 Jul 6, 2026
gstreamer1-plugins-bad-free-debugsource · amzn 2023 1.24.10-1.amzn2023.0.6 ALAS2023-2026-1917 Jul 6, 2026
gstreamer1-plugins-bad-free-devel · RHEL 8 0:1.16.1-8.el8_10 RHSA-2026:37130 Jul 10, 2026
gstreamer1-plugins-bad-free-devel · RHEL 9 0:1.22.12-7.el9_8.1 RHSA-2026:36834 Jul 9, 2026
gstreamer1-plugins-bad-free-devel · almalinux 10 1.26.7-2.el10_2.4 ALSA-2026:36749 Jul 8, 2026
gstreamer1-plugins-bad-free-devel · almalinux 8 1.16.1-8.el8_10 ALSA-2026:37130 Jul 9, 2026
gstreamer1-plugins-bad-free-devel · almalinux 9 1.22.12-7.el9_8.1 ALSA-2026:36834 Jul 8, 2026
gstreamer1-plugins-bad-free-devel · amzn 2023 1.24.10-1.amzn2023.0.6 ALAS2023-2026-1917 Jul 6, 2026
gstreamer1-plugins-bad-free-devel · ol 10 0:1.26.7-2.el10_2.4 ELSA-2026-36749 Jul 16, 2026
gstreamer1-plugins-bad-free-devel · ol 8 0:1.16.1-8.0.1.el8_10 ELSA-2026-37130 Jul 9, 2026
gstreamer1-plugins-bad-free-devel · ol 9 0:1.22.12-7.el9_8.1 ELSA-2026-36834 Jul 8, 2026
gstreamer1-plugins-bad-free-libs · RHEL 9 0:1.22.12-7.el9_8.1 RHSA-2026:36834 Jul 9, 2026
gstreamer1-plugins-bad-free-libs · almalinux 10 1.26.7-2.el10_2.4 ALSA-2026:36749 Jul 8, 2026
gstreamer1-plugins-bad-free-libs · almalinux 9 1.22.12-7.el9_8.1 ALSA-2026:36834 Jul 8, 2026
gstreamer1-plugins-bad-free-libs · amzn 2023 1.24.10-1.amzn2023.0.6 ALAS2023-2026-1917 Jul 6, 2026
gstreamer1-plugins-bad-free-libs · ol 10 0:1.26.7-2.el10_2.4 ELSA-2026-36749 Jul 16, 2026
gstreamer1-plugins-bad-free-libs · ol 9 0:1.22.12-7.el9_8.1 ELSA-2026-36834 Jul 8, 2026
gstreamer1-plugins-bad-free-libs-debuginfo · amzn 2023 1.24.10-1.amzn2023.0.6 ALAS2023-2026-1917 Jul 6, 2026

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