What is CVE-2017-11333?

CVE-2017-11333 is a medium-severity vulnerability in Xiph.org Libvorbis, classified under NULL Pointer Dereference. CVSS score: 5.5/10. Published 2017-07-31.

How severe is CVE-2017-11333?

Medium severity. CVSS v3 base score is 5.5 out of 10.

NULL pointer dereference in Xiph.org Libvorbis

CVE-2017-11333

The vorbis_analysis_wrote function in lib/block.c in Xiph.Org libvorbis 1.3.5 allows remote attackers to cause a denial of service (OOM) via a crafted wav file.

Published 2017-07-31 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.048 (92.0th percentile), scored 2026-11-01.

Low probability of exploitation in the next 30 days, but still tracked. 92nd percentile — 92.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.048 · newest: 0.048 · change: 0.000

Affected products

Xiph.org Libvorbis — versions 1.3.5

Weakness classification (CWE)

CWE-476 — NULL Pointer Dereference

References

seclists.org/fulldisclosure/2017/Jul/82 (Mailing List, Third Party Advisory)
www.exploit-db.com/exploits/42399/ (exploit)
lists.debian.org/debian-lts-announce/2018/04/msg00033.html (mailing-list)
lists.debian.org/debian-lts-announce/2019/12/msg00021.html (mailing-list)

Frequently asked questions

What is CVE-2017-11333?: CVE-2017-11333 is a medium-severity vulnerability in Xiph.org Libvorbis, classified under NULL Pointer Dereference. CVSS score: 5.5/10. Published 2017-07-31.
How severe is CVE-2017-11333?: Medium severity. CVSS v3 base score is 5.5 out of 10.