A flaw was found in FFmpeg. The tdsc_load_cursor() function writes beyond
the bounds of a heap-allocated buffer when processing crafted TDSC cursor
data. A remote attacker could exploit this by supplying a specially crafted
video file, potentially leading to a denial of service or arbitrary code
execution.
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.


Workaround

Avoid opening untrusted TDSC-encoded video content with vulnerable FFmpeg consumers until a patched version is available.

History

Fri, 28 Aug 2026 16:45:00 +0000

Type Values Removed Values Added
First Time appeared Ffmpeg
Ffmpeg ffmpeg
Red Hat
Red Hat red Hat Openshift Ai (rhoai)
Vendors & Products Ffmpeg
Ffmpeg ffmpeg
Red Hat
Red Hat red Hat Openshift Ai (rhoai)

Fri, 28 Aug 2026 11:30:00 +0000

Type Values Removed Values Added
Description A flaw was found in FFmpeg. The tdsc_load_cursor() function writes beyond the bounds of a heap-allocated buffer when processing crafted TDSC cursor data. A remote attacker could exploit this by supplying a specially crafted video file, potentially leading to a denial of service or arbitrary code execution.
Title Ffmpeg: ffmpeg: heap buffer overflow in tdsc_load_cursor() via cur_fmt_mono cursor
First Time appeared Redhat
Redhat enterprise Linux Ai
Redhat openshift Ai
Weaknesses CWE-787
CPEs cpe:/a:redhat:enterprise_linux_ai:3
cpe:/a:redhat:openshift_ai
Vendors & Products Redhat
Redhat enterprise Linux Ai
Redhat openshift Ai
References
Metrics cvssV3_1

{'score': 5.4, 'vector': 'CVSS:3.1/AV:A/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:H'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2026-08-28T15:55:50.649Z

Reserved: 2026-07-30T14:46:29.814Z

Link: CVE-2026-18393

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-08-28T12:16:25.943

Modified: 2026-08-28T20:17:22.993

Link: CVE-2026-18393

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-28T16:12:40Z

Weaknesses