CVE-2021-43226 — Actively Exploited: Windows (Microsoft)
Microsoft Windows Common Log File System Driver contains a privilege escalation vulnerability that could allow a local, privileged attacker to bypass certain security mechanisms.
| CVE ID | CVE-2021-43226 |
|---|---|
| Vendor | Microsoft |
| Product | Windows |
| Vulnerability name | Microsoft Windows Privilege Escalation Vulnerability |
| Date added | 2025-10-06 |
| Remediation due | 2025-10-27 |
| Known ransomware use | Unknown |
| Required 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. |
| 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. |
| Source | CISA Known Exploited Vulnerabilities |
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