What is CVE-2017-1000460?

CVE-2017-1000460 is a medium-severity vulnerability in Ffmpeg, classified under NULL Pointer Dereference. CVSS score: 6.5/10. Published 2018-01-03.

How severe is CVE-2017-1000460?

Medium severity. CVSS v3 base score is 6.5 out of 10.

NULL pointer dereference in Ffmpeg

CVE-2017-1000460

In line libavcodec/h264dec.c:500 in libav(v13_dev0), ffmpeg(n3.4), chromium(56 prior Feb 13, 2017), the return value of init_get_bits is ignored and get_ue_golomb(&gb) is called on an uninitialized get_bits context, which causes a NULL deref exception.

Published 2018-01-03 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.005 (39.6th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 40th percentile — 39.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000

Affected products

Ffmpeg — versions 3.4
Google Chrome
Libav — versions 13_dev0

Weakness classification (CWE)

CWE-476 — NULL Pointer Dereference

References

lists.ffmpeg.org/pipermail/ffmpeg-cvslog/2017-January/104221.html (Patch, Issue Tracking)
bugzilla.libav.org/show_bug.cgi (Exploit, Third Party Advisory, Issue Tracking)
chromium.googlesource.com/chromium/third_party/ffmpeg/+/8e313ca08800178efce0004… (Patch, Issue Tracking)
lists.debian.org/debian-lts-announce/2019/03/msg00041.html (mailing-list)

Frequently asked questions

What is CVE-2017-1000460?: CVE-2017-1000460 is a medium-severity vulnerability in Ffmpeg, classified under NULL Pointer Dereference. CVSS score: 6.5/10. Published 2018-01-03.
How severe is CVE-2017-1000460?: Medium severity. CVSS v3 base score is 6.5 out of 10.