CVE-2016-3309KEV · OVERDUE

Microsoft Windows Kernel Privilege Escalation Vulnerability

High · published August 9, 2016

Patch now

Confirmed exploited, and the score agrees

CVSS calls it high at 7.8. It is confirmed in active exploitation. It sits in the 97.5th percentile for exploit probability.

1661
days past CISA
deadline
CVSS v3.1
7.8
EPSS
20%
Percentile
97.5
In the wild
Confirmed
What it is

⚡ A crafty application is all it takes here! Local users can leverage this vulnerability in Windows to elevate their privileges like a magician pulling a rabbit out of a hat. 🎩💥 Think of it like a waiter who can access the kitchen staff’s private area by simply claiming they have an exclusive service. This vulnerability allows local users to bypass security and gain unauthorized access, just like that overzealous waiter! If exploited, an attacker can gain elevated privileges, potentially leading to complete control over the system. Imagine them rummaging through sensitive data, installing malicious software, or even locking out administrators! The consequences could be absolutely devastating for any organization.

Put simply

Think of it like a waiter who can access the kitchen staff’s private area by simply claiming they have an exclusive service. This vulnerability allows local users to bypass security and gain unauthorized access, just like that overzealous waiter! This Win32k Elevation of Privilege Vulnerability affects multiple Windows versions, allowing local users to run crafted applications that exploit kernel-mode drivers and escalate their privileges.

What to do

If exploited, an attacker can gain elevated privileges, potentially leading to complete control over the system. Imagine them rummaging through sensitive data, installing malicious software, or even locking out administrators! The consequences could be absolutely devastating for any organization. To mitigate this, ensure all affected systems are patched to the latest security updates available from Microsoft. Regularly audit user permissions to ensure only necessary access is granted, and consider implementing additional security measures like app whitelisting. 🛡️ You've got this! Follow these steps to reinforce your defenses and keep your systems secure! 🚀💪

The record
Technical detail
CVSS v3.1
7.8 · HIGH
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.20467 · 97.5th percentile
Published
2016-08-09T21:00Z
KEV added
2022-03-15 · due 2022-04-05
EPSS history
Timeline
  • 15 MAR 00:00Z
    Added to CISA KEV — remediate by Apr 5
    kev
  • 09 AUG 21:00Z
    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…
    cvelistv5