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Servers and applications

CVE-2017-16840

The VC-2 Video Compression encoder in FFmpeg 3.0 and 3.4 allows remote attackers to cause a denial of service (out-of-bounds read) because of incorrect buffer padding for non-Haar wavelets, related to libavcodec/vc2enc.c and libavcodec/vc2enc_dwt.c.

Severity
Critical 9.8
Published
21 Nov 2017
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Exploit chance
3.3% in the next 30 daysHigher than 88% of CVEs. EPSS by FIRST, 11 Nov 2026
Weakness
Out-of-bounds read (CWE-125)
Attack
Over the network · No login needed · No user action needed
Attacker can
Read data · Change data · Take it down
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Sources
NVD

Affected software

SoftwareAffected versions
FFmpegServers and applications · cpe:a:ffmpeg:ffmpeg
  • Version 3.0
  • Version 3.4

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2017-16840
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2017-16840