Windows Win32k Elevation of Privilege Vulnerability
CVE-2021-1732

7.8HIGH

Key Information:

Vendor
Microsoft
Status
Windows 10 Version 1803
Windows 10 Version 1809
Windows Server 2019
Windows Server 2019 (server Core Installation)
Vendor
CVE Published:
25 February 2021

Badges

💰 Ransomware👾 Exploit Exists🟡 Public PoC🦅 CISA Reported

Summary

Windows Win32k Elevation of Privilege Vulnerability

CISA Reported

CISA provides regional cyber and physical services to support security and resilience across the United States. CISA monitor the most dangerious vulnerabilities and have identifed as being exploited and is known by the CISA as enabling ransomware campaigns.

The CISA's recommendation is: Apply updates per vendor instructions.

Affected Version(s)

Windows 10 Version 1803 32-bit Systems 10.0.0

Windows 10 Version 1809 32-bit Systems 10.0.0

Windows 10 Version 1909 32-bit Systems 10.0.0

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2021-1732-Exploit
Created by KaLendsi

CVE-2021-1732
Created by k-k-k-k-k

CVE-2021-1732
Created by Pai-Po

References

https://portal.msrc.microsoft.com/en-US/security-guidance...
x_refsource_MISC
http://packetstormsecurity.com/files/161880/Win32k-Consol...
x_refsource_MISC
http://packetstormsecurity.com/files/166169/Win32k-Consol...
x_refsource_MISC

CVSS V3.1

Score:
7.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 💰

    Used in Ransomware

  • 👾

    Exploit known to exist

  • 🦅

    CISA Reported

  • Vulnerability published

  • Vulnerability Reserved

.