CVE-2020-0683KEV · OVERDUE

Microsoft Windows Installer Privilege Escalation Vulnerability

High · published February 11, 2020

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 94.5th percentile for exploit probability.

1634
days past CISA
deadline
CVSS v3.1
7.8
EPSS
8%
Percentile
94.5
In the wild
Confirmed
What it is

⚡ A sneaky elevation of privilege groove is hiding in the Windows Installer, and it’s got the potential to turn a clever user into an administrative superhero—without the usual safeguards! 🔥 Think of it like a building with a backdoor that nobody checks. A crafty installer could use this backdoor to access restricted areas, bypassing all the locks and security measures usually in place. If successfully exploited, an attacker could gain elevated privileges on the system, allowing them to install malicious software, change settings, or even lock you out entirely. This could lead to catastrophic data loss or compromise, making your system a sitting duck!

Put simply

Think of it like a building with a backdoor that nobody checks. A crafty installer could use this backdoor to access restricted areas, bypassing all the locks and security measures usually in place. This vulnerability allows attackers to exploit how Windows Installer processes symbolic links, ultimately giving them a way to execute code with elevated privileges. It’s a loophole in the permission mechanics that’s far too easy to exploit!

What to do

If successfully exploited, an attacker could gain elevated privileges on the system, allowing them to install malicious software, change settings, or even lock you out entirely. This could lead to catastrophic data loss or compromise, making your system a sitting duck! Immediate action is required! Ensure you apply the latest patches from Microsoft to close this vulnerability. Additionally, review your MSI packages for any suspicious symbolic links and implement strict user permissions. You've got this! Follow these steps, and you'll shore up your defenses in no time! 🛡️

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
0.07605 · 94.5th percentile
Published
2020-02-11T21:22Z
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
  • 11 FEB 21:22Z
    An elevation of privilege vulnerability exists in the Windows Installer when MSI packages process symbolic links, aka 'Windows Installer Elevation of Privilege…
    cvelistv5