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Back to active CVEs
Medium · CVSS 6.8CVE-2026-125073

FFmpeg through 9.0.2 Infinite Loop Denial of Service via IMC/IAC DecoderCVE-2026-125073

Answer in brief

CVE-2026-125073 records a Medium severity (CVSS 6.8) vulnerability in FFmpeg through 9.0.2 Infinite Loop Denial of Service via IMC/IAC Decoder. The current sources do not mark it as known exploited. The current feed maps FFmpeg/FFmpeg (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Nov 9, 2026Updated Nov 9, 2026Source checked Nov 9, 2026First seen by HOL Nov 9, 2026Material review Nov 9, 2026
Upstream Advisory

Key facts

Risk
Medium · CVSS 6.8
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Not reported

Why this deserves its current priority

CVSS is 6.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps FFmpeg/FFmpeg (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
FFmpeg/FFmpeggeneric>=0 <=9.0.2Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for FFmpeg/FFmpeg.
  2. 2Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

  1. Published upstream

    Nov 9, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Nov 9, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Nov 9, 2026

Sources and claim methodology

  • Source referencecode.ffmpeg.org
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • Source referencevulncheck.com
Upstream source description

FFmpeg through 9.0.2 contains an infinite loop vulnerability in bit_allocation() in libavcodec/imc.c that allows attackers to hang decoding by supplying audio blocks with a negative bit budget. Attackers can craft IMC or IAC audio files that drive freebits negative, causing the reduction loop to never terminate and consuming 100% CPU.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • FFmpeg through 9.0.2 Heap Buffer Overflow via hap_parse_frame_header()Same ffmpeg/ffmpeg package
  • FFmpeg 8.0 through 9.0.2 Memory Leak in VP9 Decoder via vp9_decode_frameSame ffmpeg/ffmpeg package
  • FFmpeg through 9.0.2 Vorbis Parser CPU Exhaustion via Invalid ExtradataSame ffmpeg/ffmpeg package
  • FFmpeg through 9.0.2 NULL Pointer Dereference via aac_adtstoasc Bitstream FilterSame ffmpeg/ffmpeg package
  • FFmpeg through 9.0.2 Excessive Memory Allocation via SBaGen DemuxerSame ffmpeg/ffmpeg package
  • FFmpeg through 9.0.2 Heap Buffer Overflow via cbs_jpeg_write_scan Integer OverflowSame ffmpeg/ffmpeg package

Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
CWE-835
Source
CVE List V5
Source checked
Nov 9, 2026
References
5 linked sources
Open source record