A heap overflow in the ff_sws_alphablendaway function (libswscale/alphablend.c) of FFmpeg git-master commit 722a217 allows attackers to cause a Denial of Service (DoS) via a crafted input.

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Fixes

Solution

No solution given by the vendor.


Workaround

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History

Fri, 28 Aug 2026 16:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-122

Fri, 28 Aug 2026 12:15:00 +0000

Type Values Removed Values Added
Title Heap Overflow in FFmpeg's libswscale Causes Denial of Service ffmpeg: FFmpeg: Heap overflow vulnerability leads to Denial of Service
Weaknesses CWE-787
References
Metrics threat_severity

None

cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H'}

threat_severity

Moderate


Fri, 28 Aug 2026 06:45:00 +0000

Type Values Removed Values Added
Title Heap Overflow in FFmpeg's libswscale Causes Denial of Service
Weaknesses CWE-122

Fri, 28 Aug 2026 06:15:00 +0000

Type Values Removed Values Added
First Time appeared Ffmpeg
Ffmpeg ffmpeg
Vendors & Products Ffmpeg
Ffmpeg ffmpeg

Thu, 27 Aug 2026 18:00:00 +0000

Type Values Removed Values Added
Description A heap overflow in the ff_sws_alphablendaway function (libswscale/alphablend.c) of FFmpeg git-master commit 722a217 allows attackers to cause a Denial of Service (DoS) via a crafted input.
References

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cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-08-27T21:22:30.906Z

Reserved: 2026-04-06T00:00:00.000Z

Link: CVE-2026-38347

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-08-28T00:17:27.420

Modified: 2026-08-28T00:17:27.420

Link: CVE-2026-38347

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-08-27T00:00:00Z

Links: CVE-2026-38347 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-08-28T17:45:04Z

Weaknesses