CVE-2021-43226: Microsoft Windows Privilege Escalation Vulnerability

CVE ID

CVE-2021-43226

Vulnerability Name

Microsoft Windows Privilege Escalation Vulnerability

• Project: Microsoft
• Product: Windows

Date

• Date Added: 2025-10-06
• Due Date: 2025-10-27

Description

Microsoft Windows Common Log File System Driver contains a privilege escalation vulnerability that could allow a local, privileged attacker to bypass certain security mechanisms.

Known To Be Used in Ransomware Campaigns?

Unknown

Action

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Additional Notes

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-43226 ; https://nvd.nist.gov/vuln/detail/CVE-2021-43226

More CVEs Info

Common Vulnerabilities & Exposures (CVE) List