What is CVE-2026-64834?

CVE-2026-64834 is a high-severity vulnerability in Ffmpeg, classified under Loop with Unreachable Exit Condition (Infinite Loop). CVSS score: 7.5/10. Published 2026-07-22.

How severe is CVE-2026-64834?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Ffmpeg

CVE-2026-64834

FFmpeg versions 0.6.3 through 8.1.2 contain an infinite loop vulnerability in the RTP/ASF demuxer within libavformat/rtpdec_asf.c that allows remote attackers to cause denial of service by sending a crafted RTP/ASF stream. The rtp_asf_fix_…

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Ffmpeg — versions 0.6.3, 11d5f475be95d22d5f0692220cc772b116abc632

Weakness classification (CWE)

CWE-835 — Loop with Unreachable Exit Condition (Infinite Loop)

References

disclosure@vulncheck.com (issue-tracking)
disclosure@vulncheck.com (patch)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2026-64834?: CVE-2026-64834 is a high-severity vulnerability in Ffmpeg, classified under Loop with Unreachable Exit Condition (Infinite Loop). CVSS score: 7.5/10. Published 2026-07-22.
How severe is CVE-2026-64834?: High severity. CVSS v3 base score is 7.5 out of 10.