What is CVE-2016-3733?

CVE-2016-3733 is a medium-severity vulnerability in Moodle, classified under Improper Access Control. CVSS score: 4.3/10. Published 2017-04-20.

How severe is CVE-2016-3733?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Vulnerability in Moodle

CVE-2016-3733

The "restore teacher" feature in Moodle 3.0 through 3.0.3, 2.9 through 2.9.5, 2.8 through 2.8.11, 2.7 through 2.7.13, and earlier allows remote authenticated users to overwrite the course idnumber.

Published 2017-04-20 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N.

EPSS exploit prediction

EPSS: 0.012 (66.2th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 66th percentile — 66.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: 0.000

Affected products

Moodle — versions 2.7.0, 2.7.1, 2.7.2

Weakness classification (CWE)

CWE-284 — Improper Access Control

References

www.openwall.com/lists/oss-security/2016/05/17/4 (mailing-list, Mailing List, Third Party Advisory)
git.moodle.org/gw (Patch, Vendor Advisory)
bugzilla.redhat.com/show_bug.cgi (Third Party Advisory, Issue Tracking)
www.securitytracker.com/id/1035902 (VDB Entry, Third Party Advisory, vdb-entry)

Frequently asked questions

What is CVE-2016-3733?: CVE-2016-3733 is a medium-severity vulnerability in Moodle, classified under Improper Access Control. CVSS score: 4.3/10. Published 2017-04-20.
How severe is CVE-2016-3733?: Medium severity. CVSS v3 base score is 4.3 out of 10.