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CVE-2026-12706

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

Published: Jun 19, 2026Updated: Jun 22, 2026 Sources: CVE List NVDCWE-416
NVD MITRE
6.5CVSSMEDIUM
EPSS Score
N/A
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Workaround Only

Description

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 Vector Breakdown

AV:NAC:LPR:NUI:RS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:RUser Interaction
Required
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
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Weaknesses

CWE-416

Affected Products

Red Hat Enterprise Linux AI (RHEL AI) 3Red Hat
On-prem
Operating Systems / linux-distro
Red Hat OpenShift AI (RHOAI)Red Hat
SaaSSaaS Service
Cloud & SaaS
red hatcommercialUSOperating Systemsaka red hat

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Workaround Available

MITRE ATT&CK

2 techniques
Initial Access
Privilege Escalation
View detailed technique mapping

References

https://access.redhat.com/security/cve/CVE-2026-12706
access.redhat.com
https://bugzilla.redhat.com/show_bug.cgi?id=2490710
bugzilla.redhat.com
https://lists.ffmpeg.org/archives/list/ffmpeg-devel@ffmpeg.org/message/TTRIJZA7UL6KJTEDMMBGZPLLJERJ3EFX/
lists.ffmpeg.org
and 1 more references View all →

Timeline

Published
Jun 19, 2026
Last Updated
Jun 22, 2026

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