Is CVE-2021-23887 actively exploited?

No active exploitation of CVE-2021-23887 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2021-23887 be exploited remotely?

No. CVE-2021-23887 requires local access to exploit.

What is the CVSS score of CVE-2021-23887?

CVE-2021-23887 has a CVSS score of 7.8 (HIGH).

HOME VULNERABILITIESCVE-2021-23887

HIGH

CVE-2021-23887

CWE-269Published: April 15, 2021· Updated: Jun 17, 2026

7.8

CVSS v3.1

Official Description

Privilege Escalation vulnerability in McAfee Data Loss Prevention (DLP) Endpoint for Windows prior to 11.6.100 allows a local, low privileged, attacker to write to arbitrary controlled kernel addresses. This is achieved by launching applications, suspending them, modifying the memory and restarting them when they are monitored by McAfee DLP through the hdlphook driver.

NVD Source

Technical Analysis

CVE-2021-23887 requires local access, meaning attackers must already have a foothold on the target system.

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

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 7.8.