Is CVE-2023-21768 actively exploited?

Yes. CVE-2023-21768 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, which means exploitation in the wild has been confirmed.

Can CVE-2023-21768 be exploited remotely?

The attack vector of CVE-2023-21768 has not been classified yet.

What is the CVSS score of CVE-2023-21768?

CVE-2023-21768 has not received a CVSS score yet.

HOME VULNERABILITIESCVE-2023-21768

UNKNOWNCISA KEVIN THE WILD

CVE-2023-21768

Published: April 11, 2026

Official Description

Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability

NVD Source

Risk Analysis

This flaw in the Windows Ancillary Function Driver for WinSock allows an attacker to gain elevated privileges on the affected system. Its inclusion in CISA's KEV catalog indicates that this vulnerability is being actively exploited, making it a critical concern for immediate remediation.

This vulnerability is actively being exploited in the wild. The provided information does not specify if the exploitation is remote or requires local access.

Recommended Action

Apply the latest security patches from Microsoft to mitigate this elevation of privilege vulnerability in the Windows Ancillary Function Driver for WinSock.

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-2023-21768 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-2023-21768 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.