Cyber Resilience

CVE-2023-6603

HighPublic PoC

Published: 31 December 2024

Published
31 December 2024
Modified
21 August 2025
KEV Added
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Patch
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CVSS Score v3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS Score 0.0017 38.6th percentile
Risk Priority 15 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2023-6603 is a high-severity NULL Pointer Dereference (CWE-476) vulnerability in Ffmpeg Ffmpeg. Its CVSS base score is 7.5 (High).

Operationally, ranked at the 38.6th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

EU & UK References

Vulnerability details

A flaw was found in FFmpeg's HLS playlist parsing. This vulnerability allows a denial of service via a maliciously crafted HLS playlist that triggers a null pointer dereference during initialization.

CWE(s)
CWE-476

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

ffmpeg
ffmpeg
2.0 — 6.0

Mitigating Controls

No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.

References