microsoft windows-server-2012 CVE-2016-3309 vulnerability in Microsoft Products
Published on August 9, 2016

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The kernel-mode drivers in Microsoft Windows Vista SP2; Windows Server 2008 SP2 and R2 SP1; Windows 7 SP1; Windows 8.1; Windows Server 2012 Gold and R2; Windows RT 8.1; and Windows 10 Gold, 1511, and 1607 allow local users to gain privileges via a crafted application, aka "Win32k Elevation of Privilege Vulnerability," a different vulnerability than CVE-2016-3308, CVE-2016-3310, and CVE-2016-3311.

Vendor Advisory NVD

Known Exploited Vulnerability

This Microsoft Windows Kernel Privilege Escalation Vulnerability is part of CISA's list of Known Exploited Vulnerabilities. A privilege escalation vulnerability exists when the Windows kernel fails to properly handle objects in memory. An attacker who successfully exploited this vulnerability could run arbitrary code in kernel mode.

The following remediation steps are recommended / required by April 5, 2022: Apply updates per vendor instructions.

Vulnerability Analysis

CVE-2016-3309 can be exploited with local system access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. This vulnerability is known to be actively exploited by threat actors. The potential impact of an exploit of this vulnerability is considered to be very high.

Attack Vector:
LOCAL
Attack Complexity:
LOW
Privileges Required:
LOW
User Interaction:
NONE
Scope:
UNCHANGED
Confidentiality Impact:
HIGH
Integrity Impact:
HIGH
Availability Impact:
HIGH

Products Associated with CVE-2016-3309

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Exploit Probability

EPSS
45.23%
Percentile
97.53%

EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.