CVE-2021-31201KEV · OVERDUE

Microsoft Enhanced Cryptographic Provider Elevation of Privilege Vulnerability

Medium · published June 8, 2021

Patch now

The score understates this — it's already being exploited

CVSS calls it medium at 5.2. It is confirmed in active exploitation. It sits in the 84.4th percentile for exploit probability.

1754
days past CISA
deadline
CVSS v3.1
5.2
EPSS
3%
Percentile
84.4
In the wild
Confirmed
What it is

⚠️ A minor oversight in Microsoft’s Enhanced Cryptographic Provider could let attackers elevate their privileges! 🚨 This vulnerability is real and has been exploited! Think of it like a hotel with a secret door that lets unauthorized guests access the VIP lounge — a clever twist that shouldn't be possible if proper security checks are in place! If exploited, an attacker could gain elevated privileges, potentially allowing them to run arbitrary code or access sensitive information. This could lead to unauthorized system modifications and more severe security breaches, putting your data at risk.

Put simply

Think of it like a hotel with a secret door that lets unauthorized guests access the VIP lounge — a clever twist that shouldn't be possible if proper security checks are in place! This vulnerability arises from improper validation of certain requests by the Enhanced Cryptographic Provider, allowing attackers to exploit it to elevate their privileges. It’s a loophole that should be securely locked but isn’t!

What to do

If exploited, an attacker could gain elevated privileges, potentially allowing them to run arbitrary code or access sensitive information. This could lead to unauthorized system modifications and more severe security breaches, putting your data at risk. To mitigate this, ensure you apply the latest patches from Microsoft and update your systems to the latest version immediately. Regularly review user privileges and enforce strict access controls to reduce risks. You've got this! With these steps, you can close this security gap and keep your systems safe! 🛡️

The record
Technical detail
CVSS v3.1
5.2 · MEDIUM
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N/E:F/RL:O/RC:C
CVSS v4.0
Not supplied
EPSS
0.02617 · 84.4th percentile
Published
2021-06-08T22:46Z
KEV added
2021-11-03 · due 2021-11-17
EPSS history
Timeline
  • 03 NOV 00:00Z
    Added to CISA KEV — remediate by Nov 17
    kev
  • 08 JUN 22:46Z
    Microsoft Enhanced Cryptographic Provider Elevation of Privilege Vulnerability
    cvelistv5