CVE-2016-0151KEV · OVERDUE

Microsoft Windows CSRSS Security Feature Bypass Vulnerability

High · published April 12, 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 99.2th percentile for exploit probability.

1649
days past CISA
deadline
CVSS v3.1
7.8
EPSS
63%
Percentile
99.2
In the wild
Confirmed
What it is

⚡ A crafty application could elevate privileges on your system, thanks to a vulnerability in the Client-Server Run-time Subsystem (CSRSS) of Windows! 🔥 Think of CSRSS like a restaurant where the menu can be altered by customers. If a sneaky diner can rewrite the specials, they might end up ordering the most expensive dish without any checks in place! This allows local users to gain unauthorized access to sensitive system components, effectively opening the door to misuse and potential takeover of the system. An attacker could exploit this to run malicious software with higher privileges, leading to absolute chaos!

Put simply

Think of CSRSS like a restaurant where the menu can be altered by customers. If a sneaky diner can rewrite the specials, they might end up ordering the most expensive dish without any checks in place! This vulnerability arises from the mismanagement of process tokens in CSRSS, enabling a local attacker to use a specially crafted application to bypass security mechanisms and gain elevated privileges.

What to do

This allows local users to gain unauthorized access to sensitive system components, effectively opening the door to misuse and potential takeover of the system. An attacker could exploit this to run malicious software with higher privileges, leading to absolute chaos! To protect your systems, ensure that you update to the latest patches from Microsoft immediately. Review your application permissions and monitor for any unusual activity that could indicate exploitation. This is serious, so don't delay! You've got this! With the right steps, you'll keep your systems safe and sound. 🛡️

The record
Technical detail
CVSS v3.1
7.8 · HIGH
Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.62943 · 99.2th percentile
Published
2016-04-12T23:00Z
KEV added
2022-03-28 · due 2022-04-18
EPSS history
Timeline
  • 28 MAR 00:00Z
    Added to CISA KEV — remediate by Apr 18
    kev
  • 12 APR 23:00Z
    The Client-Server Run-time Subsystem (CSRSS) in Microsoft Windows 8.1, Windows Server 2012 Gold and R2, Windows RT 8.1, and Windows 10 Gold and 1511 mismanages…
    cvelistv5