Is CVE-2021-43207 actively exploited?

Yes. CVE-2021-43207 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, which means exploitation in the wild has been confirmed.

Can CVE-2021-43207 be exploited remotely?

The attack vector of CVE-2021-43207 has not been classified yet.

What is the CVSS score of CVE-2021-43207?

CVE-2021-43207 has not received a CVSS score yet.

HOME VULNERABILITIESCVE-2021-43207

UNKNOWNCISA KEVIN THE WILD

CVE-2021-43207

Published: April 11, 2026

EPSS:0.32%probability of exploitation in 30 daysPercentile:54.9th

Official Description

Windows Common Log File System Driver Elevation of Privilege Vulnerability

NVD Source

Risk Analysis

This vulnerability in the Windows Common Log File System Driver allows an attacker to gain elevated privileges on an affected system. Given its inclusion in CISA's KEV catalog, this flaw is confirmed to be actively exploited, indicating a critical and immediate risk to Windows environments.

Active exploitation of this vulnerability has been observed in the wild, and it is listed in CISA's Known Exploited Vulnerabilities catalog.

Recommended Action

System administrators should apply the latest security updates from Microsoft to patch this elevation of privilege vulnerability. Regular patching is crucial to protect against actively exploited flaws.

Generated by the CTIWATCH analysis pipeline from this CVE's metadata (CVSS, EPSS, KEV status, exploit intelligence). Verify against vendor advisories before acting.

Technical Analysis

CVE-2021-43207 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

CISA has added CVE-2021-43207 to the Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild. U.S. federal agencies are required to patch this within the mandated timeframe, and all organizations should treat remediation as urgent.