CVE-2026-18295

GStreamer MRF File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability

HIGH
7.8
CVSS Score
Published: August 20, 2026 at 04:22 PM UTC
Updated: October 26, 2026 at 10:10 AM UTC
2 products affected across 2 vendorsGStreamerGstreamer

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Severity
HIGH7.8
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

13fcb641ed33d1472e4ffdec2846180b15405053
Affected range stops below 1.28.5, so it looks safe — our inference, not a vendor statement
v < 1.28.5
Affected range stops below 1.28.5, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (2)

x_research-advisoryThird Party Advisory
Source: cverecord
https://www.zerodayinitiative.com/advisories/ZDI-26-463/

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.8HIGHzdi
Vector?

Quick Info

StatusANALYZED
CWE
CWE-787

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