What is CVE-2016-3312?

CVE-2016-3312 is a critical-severity vulnerability in Microsoft Windows 10, classified under Information Disclosure. CVSS score: 9.1/10. Published 2016-08-09.

How severe is CVE-2016-3312?

Critical severity. CVSS v3 base score is 9.1 out of 10.

Information disclosure in Microsoft Windows 10

CVE-2016-3312

ActiveSyncProvider in Microsoft Windows 10 Gold and 1511 allows attackers to discover credentials by leveraging failure of Universal Outlook to obtain a secure connection, aka "Universal Outlook Information Disclosure Vulnerability."

Vulnerability class: Information Disclosure

Published 2016-08-09 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.

EPSS exploit prediction

EPSS: 0.097 (95.4th percentile), scored 2026-10-02.

Low probability of exploitation in the next 30 days, but still tracked. 95th percentile — 95.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.097 · newest: 0.097 · change: 0.000

Affected products

Microsoft Windows 10 — versions 1511

Weakness classification (CWE)

CWE-200 — Information Disclosure

References

www.securitytracker.com/id/1036577 (vdb-entry)
www.securityfocus.com/bid/92307 (vdb-entry)
docs.microsoft.com/en-us/security-updates/securitybulletins/2016/ms16-103 (vendor-advisory)

Frequently asked questions

What is CVE-2016-3312?: CVE-2016-3312 is a critical-severity vulnerability in Microsoft Windows 10, classified under Information Disclosure. CVSS score: 9.1/10. Published 2016-08-09.
How severe is CVE-2016-3312?: Critical severity. CVSS v3 base score is 9.1 out of 10.