CVE-2017-16840

Publication date 21 November 2017

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

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.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
ffmpeg	18.04 LTS bionic	Not affected
	17.10 artful	Ignored end of life
	17.04 zesty	Ignored end of life
	16.04 LTS xenial	Not affected
	14.04 LTS trusty	Not in release

Severity score breakdown

CVSS version: CVSS v3.0

Base score 9.8 · Critical

Base metrics

Parameter	Value
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality impact	High
Integrity impact	High
Availability impact	High

Scores

Parameter	Value
Base score	9.8 · Critical
Exploitability score	-
Impact score	-

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVE-2017-16840

Cvss 3 Severity Score

Description

Status

Severity score breakdown

References

Other references

Access our resources on patching vulnerabilities