# CVE-2026-3086: gst-plugins-bad1.0: GStreamer H.266 Codec Parser Out-Of-Bounds Write Remote Code Execution Vulnerability CVE-2026-3086 is fixed in 21 products on 1 platform, first by DEBIAN-CVE-2026-3086, released March 16, 2026. It is not reported as exploited. Patch Radar priority: High. - Web page: https://patchblox.com/security/cve/CVE-2026-3086 - Priority: High - CVSS: 7.8 (high) - EPSS: 0.0045 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: Mar 16, 2026 ## Description GStreamer H.266 Codec Parser Out-Of-Bounds Write Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of GStreamer. Interaction with this library is required to exploit this vulnerability but attack vectors may vary depending on the implementation. The specific flaw exists within the processing of APS units. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-28911. ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Linux | gst-plugins-bad1.0 Debian 13.5 (trixie) | 1.26.2-3+deb13u1 | [DEBIAN-CVE-2026-3086](https://patchblox.com/security/data/fix/linux/debian-cve-2026-3086.md) | Mar 16, 2026 | | Linux | gst-plugins-bad1.0 Debian 14 | 1.28.1-1 | [DEBIAN-CVE-2026-3086](https://patchblox.com/security/data/fix/linux/debian-cve-2026-3086.md) | Mar 16, 2026 | | Linux | mingw-gstreamer1 Fedora 43 | 1.26.11-1.fc43 | [FEDORA-2026-E6D8E9FD49](https://patchblox.com/security/data/fix/linux/fedora-2026-e6d8e9fd49.md) | Mar 27, 2026 | | Linux | mingw-gstreamer1-plugins-bad-free Fedora 43 | 1.26.11-1.fc43 | [FEDORA-2026-E6D8E9FD49](https://patchblox.com/security/data/fix/linux/fedora-2026-e6d8e9fd49.md) | Mar 27, 2026 | | Linux | mingw-gstreamer1-plugins-base Fedora 43 | 1.26.11-1.fc43 | [FEDORA-2026-E6D8E9FD49](https://patchblox.com/security/data/fix/linux/fedora-2026-e6d8e9fd49.md) | Mar 27, 2026 | | Linux | mingw-gstreamer1-plugins-good Fedora 43 | 1.26.11-1.fc43 | [FEDORA-2026-E6D8E9FD49](https://patchblox.com/security/data/fix/linux/fedora-2026-e6d8e9fd49.md) | Mar 27, 2026 | | Linux | mingw32-gstreamer1 Fedora 43 | 1.26.11-1.fc43 | [FEDORA-2026-E6D8E9FD49](https://patchblox.com/security/data/fix/linux/fedora-2026-e6d8e9fd49.md) | Mar 27, 2026 | | Linux | mingw32-gstreamer1-debuginfo Fedora 43 | 1.26.11-1.fc43 | [FEDORA-2026-E6D8E9FD49](https://patchblox.com/security/data/fix/linux/fedora-2026-e6d8e9fd49.md) | Mar 27, 2026 | | Linux | mingw32-gstreamer1-plugins-bad-free Fedora 43 | 1.26.11-1.fc43 | [FEDORA-2026-E6D8E9FD49](https://patchblox.com/security/data/fix/linux/fedora-2026-e6d8e9fd49.md) | Mar 27, 2026 | | Linux | mingw32-gstreamer1-plugins-bad-free-debuginfo Fedora 43 | 1.26.11-1.fc43 | [FEDORA-2026-E6D8E9FD49](https://patchblox.com/security/data/fix/linux/fedora-2026-e6d8e9fd49.md) | Mar 27, 2026 | | Linux | mingw32-gstreamer1-plugins-base Fedora 43 | 1.26.11-1.fc43 | [FEDORA-2026-E6D8E9FD49](https://patchblox.com/security/data/fix/linux/fedora-2026-e6d8e9fd49.md) | Mar 27, 2026 | | Linux | mingw32-gstreamer1-plugins-base-debuginfo Fedora 43 | 1.26.11-1.fc43 | [FEDORA-2026-E6D8E9FD49](https://patchblox.com/security/data/fix/linux/fedora-2026-e6d8e9fd49.md) | Mar 27, 2026 | | Linux | mingw32-gstreamer1-plugins-good Fedora 43 | 1.26.11-1.fc43 | [FEDORA-2026-E6D8E9FD49](https://patchblox.com/security/data/fix/linux/fedora-2026-e6d8e9fd49.md) | Mar 27, 2026 | | Linux | mingw32-gstreamer1-plugins-good-debuginfo Fedora 43 | 1.26.11-1.fc43 | [FEDORA-2026-E6D8E9FD49](https://patchblox.com/security/data/fix/linux/fedora-2026-e6d8e9fd49.md) | Mar 27, 2026 | | Linux | mingw64-gstreamer1 Fedora 43 | 1.26.11-1.fc43 | [FEDORA-2026-E6D8E9FD49](https://patchblox.com/security/data/fix/linux/fedora-2026-e6d8e9fd49.md) | Mar 27, 2026 | | Linux | mingw64-gstreamer1-debuginfo Fedora 43 | 1.26.11-1.fc43 | [FEDORA-2026-E6D8E9FD49](https://patchblox.com/security/data/fix/linux/fedora-2026-e6d8e9fd49.md) | Mar 27, 2026 | | Linux | mingw64-gstreamer1-plugins-bad-free Fedora 43 | 1.26.11-1.fc43 | [FEDORA-2026-E6D8E9FD49](https://patchblox.com/security/data/fix/linux/fedora-2026-e6d8e9fd49.md) | Mar 27, 2026 | | Linux | mingw64-gstreamer1-plugins-bad-free-debuginfo Fedora 43 | 1.26.11-1.fc43 | [FEDORA-2026-E6D8E9FD49](https://patchblox.com/security/data/fix/linux/fedora-2026-e6d8e9fd49.md) | Mar 27, 2026 | | Linux | mingw64-gstreamer1-plugins-base Fedora 43 | 1.26.11-1.fc43 | [FEDORA-2026-E6D8E9FD49](https://patchblox.com/security/data/fix/linux/fedora-2026-e6d8e9fd49.md) | Mar 27, 2026 | | Linux | mingw64-gstreamer1-plugins-base-debuginfo Fedora 43 | 1.26.11-1.fc43 | [FEDORA-2026-E6D8E9FD49](https://patchblox.com/security/data/fix/linux/fedora-2026-e6d8e9fd49.md) | Mar 27, 2026 | | Linux | mingw64-gstreamer1-plugins-good Fedora 43 | 1.26.11-1.fc43 | [FEDORA-2026-E6D8E9FD49](https://patchblox.com/security/data/fix/linux/fedora-2026-e6d8e9fd49.md) | Mar 27, 2026 | | Linux | mingw64-gstreamer1-plugins-good-debuginfo Fedora 43 | 1.26.11-1.fc43 | [FEDORA-2026-E6D8E9FD49](https://patchblox.com/security/data/fix/linux/fedora-2026-e6d8e9fd49.md) | Mar 27, 2026 | --- Data as of 2026-11-08T06:59:42Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo Free to use with attribution: show "Data: Patchblox Patch Radar" with a link to https://patchblox.com/security/patch-radar. Terms, including what needs a written agreement: https://patchblox.com/security/patch-radar/use-the-data Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.