Is CVE-2021-31847 actively exploited?

No active exploitation of CVE-2021-31847 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2021-31847 be exploited remotely?

No. CVE-2021-31847 requires local access to exploit.

What is the CVSS score of CVE-2021-31847?

CVE-2021-31847 has a CVSS score of 7.8 (HIGH).

HOME VULNERABILITIESCVE-2021-31847

HIGH

CVE-2021-31847

CWE-269Published: September 22, 2021· Updated: Jun 17, 2026

7.8

CVSS v3.1

Official Description

Improper access control vulnerability in the repair process for McAfee Agent for Windows prior to 5.7.4 could allow a local attacker to perform a DLL preloading attack using unsigned DLLs. This would result in elevation of privileges and the ability to execute arbitrary code as the system user, through not correctly protecting a temporary directory used in the repair process and not checking the DLL signature.

NVD Source

Technical Analysis

CVE-2021-31847 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

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.