CVE-2019-0808KEV · OVERDUE

Microsoft Win32k Privilege Escalation Vulnerability

High · published April 9, 2019

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 99.0th percentile for exploit probability.

1634
days past CISA
deadline
CVSS v3.1
7.8
EPSS
53%
Percentile
99.0
In the wild
Confirmed
What it is

⚡ An elevation of privilege flaw in the Win32k component could let attackers take full control of your system! 🔥 This vulnerability is like a sneaky maintenance worker who gains access to restricted areas by exploiting a poorly managed entry protocol—once inside, they can wreak havoc anywhere they please! An attacker can exploit this flaw to elevate their privileges and perform unauthorized actions on your system, potentially leading to data breaches or complete system compromise. Imagine someone gaining the keys to your entire IT kingdom, and they’re not asking permission!

Put simply

This vulnerability is like a sneaky maintenance worker who gains access to restricted areas by exploiting a poorly managed entry protocol—once inside, they can wreak havoc anywhere they please! This elevation of privilege vulnerability occurs when the Win32k component mishandles objects in memory, allowing an attacker to execute arbitrary code with elevated privileges, bypassing normal security restrictions.

What to do

An attacker can exploit this flaw to elevate their privileges and perform unauthorized actions on your system, potentially leading to data breaches or complete system compromise. Imagine someone gaining the keys to your entire IT kingdom, and they’re not asking permission! Immediately update your Windows system to the latest version to patch this vulnerability, and regularly review user permissions to ensure only authorized personnel have elevated access. Implement monitoring to detect any suspicious activities that could indicate an exploit attempt. You've got this! By taking these steps, you'll be well on your way to securing your system! 🛡️

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
0.53017 · 99.0th percentile
Published
2019-04-09T02:31Z
KEV added
2021-11-03 · due 2022-05-03
EPSS history
Timeline
  • 03 NOV 00:00Z
    Added to CISA KEV — remediate by May 3
    kev
  • 09 APR 02:31Z
    An elevation of privilege vulnerability exists in Windows when the Win32k component fails to properly handle objects in memory, aka 'Win32k Elevation of…
    cvelistv5