CVE-2026-18393

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.

CVSS v3 5.4 MEDIUM

5.4^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.2 / Impact : 4.2

Attack Vector ADJACENT_NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://access.redhat.com/security/cve/CVE-2026-18393
https://bugzilla.redhat.com/show_bug.cgi?id=2520309
https://github.com/FFmpeg/FFmpeg/commit/242ff799c75f20bade946314c8d741d0887ee11c
https://patchwork.ffmpeg.org/project/ffmpeg/patch/177767065817.63.1948165304485903849@29965ddac10e/

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-28 12:16

Updated : 2026-08-28 20:17

NVD link : CVE-2026-18393

Mitre link : CVE-2026-18393

CVE.ORG link : CVE-2026-18393

JSON object : View

Products Affected

No product.

CWE

CWE-787

Out-of-bounds Write

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