Is CVE-2018-6677 actively exploited?

No active exploitation of CVE-2018-6677 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2018-6677 be exploited remotely?

Yes. CVE-2018-6677 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2018-6677?

CVE-2018-6677 has a CVSS score of 9.1 (CRITICAL).

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CRITICAL

CVE-2018-6677

CWE-22Published: July 23, 2018· Updated: Jun 17, 2026

9.1

CVSS v3.1

Official Description

Directory Traversal vulnerability in the administrative user interface in McAfee Web Gateway (MWG) MWG 7.8.1.x allows authenticated administrator users to gain elevated privileges via unspecified vectors.

NVD Source

Technical Analysis

CVE-2018-6677 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires high 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 9.1.

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.