How severe is CVE-2016-3312?

CVE-2016-3312 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2016-3312 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 10% (95th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2016-3312?

CVE-2016-3312 primarily affects Microsoft Windows 10. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2016-3312?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2016-3312 published?

CVE-2016-3312 was published on 2016-08-09 and last updated on 2026-06-17.

CVE-2016-3312

CVE-2016-3312 is a critical-severity vulnerability in Microsoft Windows 10 with a CVSS 3.x base score of 9.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-200.

Key facts

Severity: Critical (CVSS 3.x base score 9.1)
CVSS v2: 5.0
EPSS exploit prediction: 10% (95th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-200
Affected product: Microsoft Windows 10
Published: 2016-08-09
Last modified: 2026-06-17

Description

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."

Frequently asked questions

What is 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."
How severe is CVE-2016-3312?: CVE-2016-3312 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2016-3312 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 10% (95th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2016-3312?: CVE-2016-3312 primarily affects Microsoft Windows 10. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2016-3312?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2016-3312 published?: CVE-2016-3312 was published on 2016-08-09 and last updated on 2026-06-17.

References

Affected products (4)

cpe:2.3:o:microsoft:windows_10:-:*:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_10:-:*:*:*:*:*:x86:*
cpe:2.3:o:microsoft:windows_10:1511:*:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_10:1511:*:*:*:*:*:x86:*

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