What is CVE-2016-1731?

CVE-2016-1731 is a medium-severity vulnerability in Apple Software Update, classified under Cryptographic Issues. CVSS score: 5.9/10. Published 2016-03-14.

How severe is CVE-2016-1731?

Medium severity. CVSS v3 base score is 5.9 out of 10.

Vulnerability in Apple Software Update

CVE-2016-1731

Apple Software Update before 2.2 on Windows does not use HTTPS, which makes it easier for man-in-the-middle attackers to spoof updates by modifying the client-server data stream.

Vulnerability class: POODLE (CVE-2014-3566)

Published 2016-03-14 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.009 (58.9th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 59th percentile — 58.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000

Affected products

Apple Software Update

Weakness classification (CWE)

References

www.securitytracker.com/id/1035256 (vdb-entry)
support.apple.com/kb/HT206091 (Patch, Vendor Advisory)
www.securityfocus.com/bid/84283 (vdb-entry)

Frequently asked questions

What is CVE-2016-1731?: CVE-2016-1731 is a medium-severity vulnerability in Apple Software Update, classified under Cryptographic Issues. CVSS score: 5.9/10. Published 2016-03-14.
How severe is CVE-2016-1731?: Medium severity. CVSS v3 base score is 5.9 out of 10.