High [CVE-2026-18296] Remote Code Execution via MRF file parsing heap-based buffer overflow
This high-severity Red Hat Linux advisory covers CVE-2026-18296 affecting Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8.
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Summary
GStreamer MRF File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of GStreamer.
User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the parsing of MRF files.
The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process.
Was ZDI-CAN-29608. A flaw was found in GStreamer.
Successful exploitation requires user interaction, such as visiting a malicious page or opening a malicious file, and could lead to arbitrary code execution in the context of the current process. Red Hat severity: Important — CVSS 7.8 (CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H).
Weakness: CWE-120. Affected Red Hat products: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9.
Red Hat does not currently list a fixing RHSA for this CVE.
Affected products named by the advisory: Red Hat package: gstreamer1; Red Hat package: mingw-gstreamer1.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · high-confidence parse· fetched 26 minutes ago·verify at source
Fixed versions
No fixed release is recorded yet. That does not prove no patch exists — confirm against the vendor advisory.
Official advisory · high-confidence parse· fetched 26 minutes ago·verify at source
Mitigation checklist
- To mitigate this issue, users should avoid opening or processing untrusted Multimedia Research Forum (MRF) files. Exercise caution when interacting with untrusted web content that may attempt to deliver malicious MRF files, as user interaction is required for exploitation.
Official advisory · high-confidence parse· fetched 26 minutes ago·verify at source
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