CVE-2026-38347: n/a
Description
CVE-2026-38347 is a heap overflow vulnerability in the ff_sws_alphablendaway function of FFmpeg's libswscale/alphablend.c component. It allows attackers to cause a denial of service (DoS) by providing crafted input. The vulnerability has a high severity score of 7.5 and does not impact confidentiality or integrity but affects availability. No patch or official remediation guidance is currently available.
CVSS v3.1
Score 7.5high
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves a heap overflow in the ff_sws_alphablendaway function within the libswscale/alphablend.c file of FFmpeg. The flaw can be triggered by attackers supplying specially crafted input, leading to a denial of service condition. The CVSS v3.1 score is 7.5, reflecting network attack vector, low attack complexity, no privileges or user interaction required, and impact limited to availability. There is no information on affected versions or vendor-provided patches or mitigations at this time.
Potential Impact
Successful exploitation results in a denial of service, causing the affected FFmpeg process to crash or become unresponsive. There is no reported impact on confidentiality or integrity. This could disrupt services or applications relying on FFmpeg for media processing.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, users should consider limiting exposure to untrusted input processed by FFmpeg and monitor for updates from the FFmpeg project regarding this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mitre
- Date Reserved
- 2026-04-06T00:00:00.000Z
- State
- PUBLISHED
Threat ID: 6a916b37acd9273b49cabd6b
Added to database: 08/28/2026, 11:04:23 UTC
Last enriched: 09/07/2026, 15:34:10 UTC
Last updated: 10/12/2026, 18:48:19 UTC
Views: 52
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