CVE-2026-38347: High severity FFmpeg FFmpeg vulnerability
Published Aug 27, 2026
·Updated
A heap overflow in the ffswsalphablendaway function (libswscale/alphablend.c) of FFmpeg git-master commit 722a217 allows attackers to cause a Denial of Service (DoS) via a crafted input.
Affected Software
2 affected componentsFixes available
FFmpeg FFmpeg=722a217
debian/ffmpeg<=7:5.1.9-0+deb12u1
7:7.1.5-0+deb13u17:9.0.2-17:9.0.2-3
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
debian/ffmpegto a version that resolves this vulnerability.Fixed in 7:7.1.5-0+deb13u1Fixed in 7:9.0.2-1Fixed in 7:9.0.2-3
Event History
Aug 27, 2026
CVE Published
via MITRE·12:00 AM
Data Sourced
via MITRE·12:00 AM
Description
Aug 28, 2026
Data Sourced
via NVD·12:17 AM
DescriptionSeverityWeakness
Oct 13, 2026
Data Sourced
via Debian·05:30 AM
DescriptionAffected Software
Data Sourced
via Launchpad·05:30 AM
Description
Oct 14, 2026
Data Sourced
via Ubuntu·05:30 AM
RemedyDescriptionSeverityAffected Software
Frequently Asked Questions
1
What must an attacker provide to trigger the denial of service?
An attacker needs to supply a crafted input that reaches the ff_sws_alphablendaway function in libswscale/alphablend.c.
2
Which FFmpeg code state is identified as affected?
The issue is identified in FFmpeg git-master commit 722a217. No affected release versions or fixed versions are provided.