What’s Vulnerable › Vulnerabilities

CVE-2021-23886: Local Denial of Service in McAfee DLP Endpoint for Windows

• Severity: medium (CVSS 5.5 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-755

Description

Denial of Service vulnerability in McAfee Data Loss Prevention (DLP) Endpoint for Windows prior to 11.6.100 allows a local, low privileged, attacker to cause a BSoD through suspending a process, modifying the processes memory and restarting it. This is triggered by the hdlphook driver reading invalid memory.

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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