CVE-2026-12706

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).

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://access.redhat.com/security/cve/CVE-2026-12706
https://bugzilla.redhat.com/show_bug.cgi?id=2490710
https://lists.ffmpeg.org/archives/list/ffmpeg-devel@ffmpeg.org/message/TTRIJZA7UL6KJTEDMMBGZPLLJERJ3EFX/
https://patchwork.ffmpeg.org/project/ffmpeg/patch/177766314111.63.10674887811034989327@29965ddac10e/

Configurations

No configuration.

History

19 Jun 2026, 12:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-06-19 12:16

Updated : 2026-06-22 20:16

NVD link : CVE-2026-12706

Mitre link : CVE-2026-12706

CVE.ORG link : CVE-2026-12706

JSON object : View

Products Affected

No product.

CWE

CWE-416

Use After Free

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