CVE-2026-12706

MEDIUM 6.5

Ffmpeg: ffmpeg: heap use-after-free read in rasc decoder decode_move()

CVSS Score

6.5

EPSS Score

0.0%

EPSS Percentile

0th

A use-after-free vulnerability was found in FFmpeg's RASC video decoder. The decode_move() function initializes a read pointer into a decompressed buffer, but a subsequent reallocation of that same buffer during move-table processing leaves the pointer dangling. An attacker could exploit this by providing a specially crafted AVI file containing a malicious RASC video stream. When a user opens or plays the file, the decoder reads from freed heap memory, which could lead to a denial of service (crash).

CWE	CWE-416
Vendor	red hat
Product	red hat enterprise linux ai (rhel ai) 3
Published	Jun 19, 2026
Last Updated	Jun 19, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High