# CVE-2026-59691: gst-plugins-bad1.0: A heap buffer overflow vulnerability was found in GStreamer's rfbsrc plugin CVE-2026-59691 is fixed in 9 products on 1 platform, first by DEBIAN-CVE-2026-59691, released July 22, 2026. It is not reported as exploited. Patch Radar priority: High. - Web page: https://patchblox.com/security/cve/CVE-2026-59691 - Priority: High - CVSS: 7.5 (high) - EPSS: 0.0033 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: Jul 8, 2026 ## Description A heap buffer overflow vulnerability was found in GStreamer's rfbsrc plugin. When a client connects to a malicious RFB/VNC server that advertises a 16bpp framebuffer and sends Hextile-encoded updates, the Hextile background fill path writes 32-bit pixel values into a buffer allocated for 16-bit pixels. This type mismatch causes an out-of-bounds heap write that can lead to denial of service (process crash) and potential memory corruption. ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Linux | gst-plugins-bad1.0 Debian 12.15 (bookworm) | 1.22.0-4+deb12u8 | [DEBIAN-CVE-2026-59691](https://patchblox.com/security/data/fix/linux/debian-cve-2026-59691.md) | Jul 22, 2026 | | Linux | gst-plugins-bad1.0 Debian 14 | 1.28.5-1 | [DEBIAN-CVE-2026-59691](https://patchblox.com/security/data/fix/linux/debian-cve-2026-59691.md) | Jul 22, 2026 | | Linux | gstreamer1-plugin-openh264 amzn 2023 | 1.24.10-1.amzn2023.0.8 | [ALAS2023-2026-1994](https://patchblox.com/security/data/fix/linux/alas2023-2026-1994.md) | Aug 3, 2026 | | Linux | gstreamer1-plugin-openh264-debuginfo amzn 2023 | 1.24.10-1.amzn2023.0.8 | [ALAS2023-2026-1994](https://patchblox.com/security/data/fix/linux/alas2023-2026-1994.md) | Aug 3, 2026 | | Linux | gstreamer1-plugins-bad-free RHEL 10 | 1.24.11-3.el10_0.6 | [RHSA-2026:54659](https://patchblox.com/security/data/fix/linux/rhsa-2026-54659.md) | Jul 31, 2026 | | Linux | gstreamer1-plugins-bad-free RHEL 8 | 0:1.16.1-9.el8_10.1 | [RHSA-2026:47731](https://patchblox.com/security/data/fix/linux/rhsa-2026-47731.md) | Jul 31, 2026 | | Linux | gstreamer1-plugins-bad-free RHEL 9 | 0:1.22.12-7.el9_8.3 | [RHSA-2026:47179](https://patchblox.com/security/data/fix/linux/rhsa-2026-47179.md) | Aug 5, 2026 | | Linux | gstreamer1-plugins-bad-free almalinux 10 | 1.26.7-2.el10_2.6 | [ALSA-2026:47180](https://patchblox.com/security/data/fix/linux/alsa-2026-47180.md) | Jul 28, 2026 | | Linux | gstreamer1-plugins-bad-free almalinux 8 | 1.16.1-9.el8_10.1 | [ALSA-2026:47731](https://patchblox.com/security/data/fix/linux/alsa-2026-47731.md) | Jul 29, 2026 | | Linux | gstreamer1-plugins-bad-free almalinux 9 | 1.22.12-7.el9_8.3 | [ALSA-2026:47179](https://patchblox.com/security/data/fix/linux/alsa-2026-47179.md) | Jul 28, 2026 | | Linux | gstreamer1-plugins-bad-free amzn 2023 | 1.24.10-1.amzn2023.0.8 | [ALAS2023-2026-1994](https://patchblox.com/security/data/fix/linux/alas2023-2026-1994.md) | Aug 3, 2026 | | Linux | gstreamer1-plugins-bad-free ol 10 | 0:1.26.7-2.el10_2.6 | [ELSA-2026-47180](https://patchblox.com/security/data/fix/linux/elsa-2026-47180.md) | Jul 28, 2026 | | Linux | gstreamer1-plugins-bad-free ol 8 | 0:1.16.1-9.0.1.el8_10.1 | [ELSA-2026-47731](https://patchblox.com/security/data/fix/linux/elsa-2026-47731.md) | Jul 29, 2026 | | Linux | gstreamer1-plugins-bad-free ol 9 | 0:1.22.12-7.el9_8.3 | [ELSA-2026-47179](https://patchblox.com/security/data/fix/linux/elsa-2026-47179.md) | Jul 29, 2026 | | Linux | gstreamer1-plugins-bad-free rocky 10 | 0:1.26.7-2.el10_2.6 | [RLSA-2026:47180](https://patchblox.com/security/data/fix/linux/rlsa-2026-47180.md) | Jul 29, 2026 | | Linux | gstreamer1-plugins-bad-free rocky 8 | 0:1.16.1-9.el8_10.1 | [RLSA-2026:47731](https://patchblox.com/security/data/fix/linux/rlsa-2026-47731.md) | Jul 30, 2026 | | Linux | gstreamer1-plugins-bad-free rocky 9 | 0:1.22.12-7.el9_8.3 | [RLSA-2026:47179](https://patchblox.com/security/data/fix/linux/rlsa-2026-47179.md) | Aug 3, 2026 | | Linux | gstreamer1-plugins-bad-free-debuginfo amzn 2023 | 1.24.10-1.amzn2023.0.8 | [ALAS2023-2026-1994](https://patchblox.com/security/data/fix/linux/alas2023-2026-1994.md) | Aug 3, 2026 | | Linux | gstreamer1-plugins-bad-free-debugsource amzn 2023 | 1.24.10-1.amzn2023.0.8 | [ALAS2023-2026-1994](https://patchblox.com/security/data/fix/linux/alas2023-2026-1994.md) | Aug 3, 2026 | | Linux | gstreamer1-plugins-bad-free-devel RHEL 8 | 0:1.16.1-9.el8_10.1 | [RHSA-2026:47731](https://patchblox.com/security/data/fix/linux/rhsa-2026-47731.md) | Jul 31, 2026 | | Linux | gstreamer1-plugins-bad-free-devel RHEL 9 | 0:1.22.12-7.el9_8.3 | [RHSA-2026:47179](https://patchblox.com/security/data/fix/linux/rhsa-2026-47179.md) | Aug 5, 2026 | | Linux | gstreamer1-plugins-bad-free-devel almalinux 10 | 1.26.7-2.el10_2.6 | [ALSA-2026:47180](https://patchblox.com/security/data/fix/linux/alsa-2026-47180.md) | Jul 28, 2026 | | Linux | gstreamer1-plugins-bad-free-devel almalinux 8 | 1.16.1-9.el8_10.1 | [ALSA-2026:47731](https://patchblox.com/security/data/fix/linux/alsa-2026-47731.md) | Jul 29, 2026 | | Linux | gstreamer1-plugins-bad-free-devel almalinux 9 | 1.22.12-7.el9_8.3 | [ALSA-2026:47179](https://patchblox.com/security/data/fix/linux/alsa-2026-47179.md) | Jul 28, 2026 | | Linux | gstreamer1-plugins-bad-free-devel amzn 2023 | 1.24.10-1.amzn2023.0.8 | [ALAS2023-2026-1994](https://patchblox.com/security/data/fix/linux/alas2023-2026-1994.md) | Aug 3, 2026 | | Linux | gstreamer1-plugins-bad-free-devel ol 10 | 0:1.26.7-2.el10_2.6 | [ELSA-2026-47180](https://patchblox.com/security/data/fix/linux/elsa-2026-47180.md) | Jul 28, 2026 | | Linux | gstreamer1-plugins-bad-free-devel ol 8 | 0:1.16.1-9.0.1.el8_10.1 | [ELSA-2026-47731](https://patchblox.com/security/data/fix/linux/elsa-2026-47731.md) | Jul 29, 2026 | | Linux | gstreamer1-plugins-bad-free-devel ol 9 | 0:1.22.12-7.el9_8.3 | [ELSA-2026-47179](https://patchblox.com/security/data/fix/linux/elsa-2026-47179.md) | Jul 29, 2026 | | Linux | gstreamer1-plugins-bad-free-libs RHEL 9 | 0:1.22.12-7.el9_8.3 | [RHSA-2026:47179](https://patchblox.com/security/data/fix/linux/rhsa-2026-47179.md) | Aug 5, 2026 | | Linux | gstreamer1-plugins-bad-free-libs almalinux 10 | 1.26.7-2.el10_2.6 | [ALSA-2026:47180](https://patchblox.com/security/data/fix/linux/alsa-2026-47180.md) | Jul 28, 2026 | | Linux | gstreamer1-plugins-bad-free-libs almalinux 9 | 1.22.12-7.el9_8.3 | [ALSA-2026:47179](https://patchblox.com/security/data/fix/linux/alsa-2026-47179.md) | Jul 28, 2026 | | Linux | gstreamer1-plugins-bad-free-libs amzn 2023 | 1.24.10-1.amzn2023.0.8 | [ALAS2023-2026-1994](https://patchblox.com/security/data/fix/linux/alas2023-2026-1994.md) | Aug 3, 2026 | | Linux | gstreamer1-plugins-bad-free-libs ol 10 | 0:1.26.7-2.el10_2.6 | [ELSA-2026-47180](https://patchblox.com/security/data/fix/linux/elsa-2026-47180.md) | Jul 28, 2026 | | Linux | gstreamer1-plugins-bad-free-libs ol 9 | 0:1.22.12-7.el9_8.3 | [ELSA-2026-47179](https://patchblox.com/security/data/fix/linux/elsa-2026-47179.md) | Jul 29, 2026 | | Linux | gstreamer1-plugins-bad-free-libs-debuginfo amzn 2023 | 1.24.10-1.amzn2023.0.8 | [ALAS2023-2026-1994](https://patchblox.com/security/data/fix/linux/alas2023-2026-1994.md) | Aug 3, 2026 | --- Data as of 2026-11-09T01:18:40Z UTC. 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