Is CVE-2018-6756 actively exploited?

A proof-of-concept exploit is publicly available for CVE-2018-6756, but active exploitation has not been confirmed.

Can CVE-2018-6756 be exploited remotely?

No. CVE-2018-6756 requires local access to exploit.

What is the CVSS score of CVE-2018-6756?

CVE-2018-6756 has a CVSS score of 7.8 (HIGH).

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HIGHPOC

CVE-2018-6756

NVD-CWE-noinfoPublished: December 6, 2018· Updated: Jun 17, 2026

7.8

CVSS v3.1

Official Description

Authentication Abuse vulnerability in Microsoft Windows client in McAfee True Key (TK) 5.1.230.7 and earlier allows local users to execute unauthorized commands via specially crafted malware.

NVD Source

Technical Analysis

CVE-2018-6756 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.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.

A proof-of-concept (PoC) exploit exists for CVE-2018-6756. While not yet confirmed in active campaigns, the availability of PoC code increases exploitation risk substantially.