CVE-2026-64833

HIGH SEVERITY

CVSS Score & Metrics

Base Score

7.1 / 10

Vector String

                                        CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H                                    

Vulnerability Description

FFmpeg versions 0.7.1 through 8.1.2 contain an out-of-bounds read vulnerability in the S/PDIF muxer that allows attackers to access memory beyond buffer boundaries by supplying a crafted DTS stream with a core_size value larger than the actual packet length. Attackers can exploit the missing bounds check in the spdif_header_dts4 function by providing a malicious DTS-HD audio stream during S/PDIF re-muxing to trigger unauthorized memory reads beyond the packet buffer.

Vulnerability Details

Published Date

July 22, 2026

Last Modified

July 22, 2026

CWE ID

CWE-125

Source

NVD

Vendor

FFmpeg

Product

FFmpeg

External References

https://code.ffmpeg.org/FFmpeg/FFmpeg/commit/6f80e2765492700622596af720534cef33dd31b4
https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/23661
https://www.vulncheck.com/advisories/ffmpeg-out-of-bounds-read-via-s-pdif-muxer-spdifenc-c

CVE-2026-64833

CVSS Score & Metrics

Vulnerability Description

Vulnerability Details

External References

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