CVE-2026-73434 Gstreamer1-plugins-good: gstreamer: out-of-bounds read in avidemux vprp video field descriptor parsing
An out-of-bounds read in GStreamer's AVI parser allows attackers to crash applications via crafted media files, requiring an upgrade to the library.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-73434?
CVE-2026-73434 is a medium-severity memory corruption vulnerability in Gstreamer Gstreamer, published on 12 Aug 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
A flaw was found in GStreamer gst-plugins-good (avidemux). In gst_avi_demux_riff_parse_vprp(), the number of available gst_riff_vprp_video_field_desc entries is calculated by dividing the remaining buffer size by the attacker-controlled vprp->fields value, rather than by sizeof(gst_riff_vprp_video_field_desc). This can cause the parser to treat more field descriptors as available than fit in the input buffer, resulting in out-of-bounds reads. Processing a crafted AVI via playbin/decodebin can crash the application (denial of service). Fixed upstream in gst-plugins-good 1.28.6 (GStreamer-SA-2026-0072).
Weakness: CWE-125
Which versions are affected by CVE-2026-73434?
It affects 2 products.
Products include Gstreamer Gstreamer, Redhat Enterprise Linux.
How do I fix CVE-2026-73434?
Upgrade to a fixed version.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-73434 being exploited?
There is no known exploitation of CVE-2026-73434 in the wild and no public exploit code.
Other vulnerabilities in Gstreamer Gstreamer
- CVE-2026-3083 GStreamer rtpqdm2depay Out-Of-Bounds Write Remote Code Execution Vulnerability
- CVE-2026-3085 GStreamer rtpqdm2depay Heap-based Buffer Overflow Remote Code Execution Vulnerability
- CVE-2023-37328 GStreamer PGS File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability
- CVE-2023-37329 GStreamer SRT File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability
- CVE-2023-38103 GStreamer RealMedia File Parsing Integer Overflow Remote Code Execution Vulnerability
Sources
Also known as DEBIAN-CVE-2026-73434, ECHO-a321-5a7e-9f85, GHSA-wfhj-v65x-vjp5, MINI-j32m-jx3j-wx5q, UBUNTU-CVE-2026-73434.