CVE-2023-28229KEV · OVERDUECWE-591

Windows CNG Key Isolation Service Elevation of Privilege Vulnerability

High · published April 11, 2023

Patch now

Confirmed exploited, and the score agrees

CVSS calls it high at 7.0. It is confirmed in active exploitation. It sits in the 76.6th percentile for exploit probability.

1094
days past CISA
deadline
CVSS v3.1
7.0
EPSS
2%
Percentile
76.6
In the wild
Confirmed
What it is

🚨 A sneaky privilege escalation vulnerability in the Windows CNG Key Isolation Service could let attackers run amok with elevated permissions! 🔥 Think of it like a janitor who finds a way to unlock the secure vault in a bank — once inside, they can access any sensitive information stored there without anyone noticing. An attacker exploiting this flaw could execute arbitrary code with elevated privileges, potentially allowing them to install programs, view and alter sensitive data, or even create new accounts with full rights. The damage could be catastrophic for any organization, making it a prime target! ⚡

Put simply

Think of it like a janitor who finds a way to unlock the secure vault in a bank — once inside, they can access any sensitive information stored there without anyone noticing. This vulnerability arises from improper handling of privileged access within the CNG Key Isolation Service, allowing attackers to elevate their privileges and execute malicious code.

What to do

An attacker exploiting this flaw could execute arbitrary code with elevated privileges, potentially allowing them to install programs, view and alter sensitive data, or even create new accounts with full rights. The damage could be catastrophic for any organization, making it a prime target! ⚡ To mitigate this vulnerability, patch your systems immediately with the latest security updates from Microsoft. Review your security policies to ensure only authorized personnel have access to sensitive areas and monitor for any unusual activities that may indicate exploitation attempts. You've got this! Take action now, and you'll be a security hero in no time! 🛡️

The record
Technical detail
CVSS v3.1
7.0 · HIGH
Vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
CVSS v4.0
Not supplied
EPSS
0.01671 · 76.6th percentile
Weakness
CWE-591 · Sensitive Data Storage in Improperly Locked Memory
Published
2023-04-11T19:13Z
KEV added
2023-10-04 · due 2023-10-25
EPSS history
Timeline
  • 04 OCT 00:00Z
    Added to CISA KEV — remediate by Oct 25
    kev
  • 11 APR 19:13Z
    Windows CNG Key Isolation Service Elevation of Privilege Vulnerability
    cvelistv5