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Servers and applications

CVE-2018-13305

In FFmpeg 4.0.1, due to a missing check for negative values of the mquant variable, the vc1_put_blocks_clamped function in libavcodec/vc1_block.c may trigger an out-of-array access while converting a crafted AVI file to MPEG4, leading to an information disclosure or a denial of service.

Severity
High 8.1
Published
5 Jul 2018
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Exploit chance
1.4% in the next 30 daysHigher than 72% of CVEs. EPSS by FIRST, 10 Nov 2026
Sources
NVD

Affected software

SoftwareAffected versions
FFmpegServers and applications · cpe:a:ffmpeg:ffmpeg
  • Version 4.0.1

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2018-13305
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2018-13305