What is CVE-2017-14632?

CVE-2017-14632 is a critical-severity vulnerability in Xiph.org Libvorbis, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 9.8/10. Published 2017-09-21.

How severe is CVE-2017-14632?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Buffer overflow in Xiph.org Libvorbis

CVE-2017-14632

Xiph.Org libvorbis 1.3.5 allows Remote Code Execution upon freeing uninitialized memory in the function vorbis_analysis_headerout() in info.c when vi->channels<=0, a similar issue to Mozilla bug 550184.

Vulnerability class: Buffer Overflow

Published 2017-09-21 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.057 (93.0th percentile), scored 2026-11-01.

Low probability of exploitation in the next 30 days, but still tracked. 93rd percentile — 93.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.057 · newest: 0.057 · change: 0.000

Affected products

Xiph.org Libvorbis — versions 1.3.5
Canonical Ubuntu Linux — versions 14.04, 16.04, 17.10
Debian Linux — versions 7.0, 9.0

Weakness classification (CWE)

CWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer

References

usn.ubuntu.com/3569-1/ (vendor-advisory, Third Party Advisory)
www.debian.org/security/2018/dsa-4113 (vendor-advisory, Third Party Advisory)
gitlab.xiph.org/xiph/vorbis/issues/2328 (Vendor Advisory)
lists.debian.org/debian-lts-announce/2018/04/msg00033.html (mailing-list, Third Party Advisory)

Frequently asked questions

What is CVE-2017-14632?: CVE-2017-14632 is a critical-severity vulnerability in Xiph.org Libvorbis, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 9.8/10. Published 2017-09-21.
How severe is CVE-2017-14632?: Critical severity. CVSS v3 base score is 9.8 out of 10.