What’s Vulnerable › Vulnerabilities

CVE-2021-23887: Privilege escalation in McAfee DLP Endpoint for Windows

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-04-15 · updated 2026-06-17
• Weakness: CWE-269

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.

Affected products

• McAfee,LLC McAfee Data Loss Prevention (DLP) Endpoint for Windows: before 11.6.100.41 — fixed in 11.6.100.41

How to fix

Upgrade to a fixed version: McAfee,LLC McAfee Data Loss Prevention (DLP) Endpoint for Windows 11.6.100.41. Check the vendor advisory for mitigations.

References

• https://kc.mcafee.com/corporate/index?page=content&id=SB10354
• https://kc.mcafee.com/corporate/index?page=content&id=SB10357
• https://kc.mcafee.com/corporate/index?page=content&id=SB10354
• https://kc.mcafee.com/corporate/index?page=content&id=SB10357

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