High [CVE-2026-18295] Remote code execution via MRF file parsing
This high-severity Red Hat Linux advisory covers CVE-2026-18295 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 Out-Of-Bounds Write 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 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-29510. A flaw was found in GStreamer.
This out-of-bounds write vulnerability occurs during the parsing of MRF files due to improper validation of user-supplied data. A remote attacker could exploit this by tricking a user into visiting a malicious page or opening a malicious file.
Successful exploitation could lead to arbitrary code execution in the context of the current process. Red Hat severity: Important — CVSS 8.8 (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H).
Weakness: CWE-787. 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 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 27 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 27 minutes ago·verify at source
Mitigation checklist
- To mitigate this vulnerability, users should avoid opening untrusted MRF files or visiting untrusted web pages that may serve malicious MRF content. This operational control reduces the attack surface by preventing the necessary user interaction for exploitation.
Official advisory · high-confidence parse· fetched 27 minutes ago·verify at source
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