VULNERABILITY INTELLIGENCE

CVE-2026-64834

CVSS score8.7 HIGH
EPSS probability0.73%
CISA KEVNot currently listed
Published2026-07-22
Last modified2026-10-24
CVSS vectorCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Description

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_header function fails to validate a minimum chunksize when iterating over ASF objects, causing the loop pointer to never advance when a chunksize is smaller than the 24-byte minimum ASF object header size, resulting in CPU exhaustion that denies service to legitimate users.

Weakness classification

  • CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop')

Primary references