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.
CVSS Details
- CVSS 3.1 Base Score: 8.8
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade gstreamer1-plugins-bad-free-develUpgrade gstreamer1-plugins-bad-free-libsUpgrade gstreamer1-plugins-bad-free | Jul 9, 2026 | Jul 9, 2026 |
| Amazon Linux Ami 2 | — | Upgrade gstreamer1-plugins-bad-freeUpgrade gstreamer-plugins-bad-free-develUpgrade gstreamer-plugins-bad-free-devel-docsUpgrade gstreamer-plugins-bad-free-debuginfoUpgrade gstreamer1-plugins-bad-free-develUpgrade gstreamer1-plugins-bad-free-debuginfoUpgrade gstreamer-plugins-bad-free | Jul 8, 2026 | Jul 8, 2026 |
| Amazon_linux_2023 | — | Upgrade gstreamer1-plugins-bad-free-libs-debuginfoUpgrade gstreamer1-plugins-bad-free-debuginfoUpgrade gstreamer1-plugins-bad-free-develUpgrade gstreamer1-plugin-openh264-debuginfoUpgrade gstreamer1-plugins-bad-free-libsUpgrade gstreamer1-plugin-openh264Upgrade gstreamer1-plugins-bad-freeUpgrade gstreamer1-plugins-bad-free-debugsource | Jul 8, 2026 | Jun 15, 2026 |
| Debian | — | Upgrade gst-plugins-bad1.0 | Aug 23, 2026 | Aug 23, 2026 |
| Freebsd | — | Upgrade gstreamer1-plugins-uglyUpgrade gstreamer1-pluginsUpgrade gstreamer1-plugins-goodUpgrade gstreamer1-libavUpgrade gstreamer1-plugins-bad | Jun 30, 2026 | Jun 29, 2026 |
| Redhat_linux | — | Upgrade gstreamer-plugins-bad-free-debuginfoUpgrade gstreamer1-plugins-bad-free-debuginfoNo solution existsUpgrade gstreamer1-plugins-bad-free-libsUpgrade gstreamer1-plugins-bad-free-develUpgrade gstreamer1-plugins-bad-free-debugsourceUpgrade gstreamer1-plugins-bad-free-libs-debuginfoUpgrade gstreamer-plugins-bad-freeUpgrade gstreamer1-plugins-bad-freeUpgrade gstreamer-plugins-bad-free-devel-docsUpgrade gstreamer-plugins-bad-free-develUpgrade gstreamer1-plugins-bad-free-gtk | Jul 10, 2026 | Jun 15, 2026 |
| Rocky_linux | — | Upgrade gstreamer1-plugins-bad-free-develUpgrade gstreamer1-plugins-bad-free-libs-debuginfoUpgrade gstreamer1-plugins-bad-free-debugsourceUpgrade gstreamer1-plugins-bad-freeUpgrade gstreamer1-plugins-bad-free-libsUpgrade gstreamer1-plugins-bad-free-debuginfo | Jul 13, 2026 | Jul 10, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jul 6, 2026 | Jun 15, 2026 |
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