Is CVE-2018-6318 actively exploited?

No active exploitation of CVE-2018-6318 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2018-6318 be exploited remotely?

No. CVE-2018-6318 requires local access to exploit.

What is the CVSS score of CVE-2018-6318?

CVE-2018-6318 has a CVSS score of 7.8 (HIGH).

HOME VULNERABILITIESCVE-2018-6318

HIGH

CVE-2018-6318

CWE-426Published: February 2, 2018· Updated: Jun 17, 2026

7.8

CVSS v3.1

Official Description

In Sophos Tester Tool 3.2.0.7 Beta, the driver loads (in the context of the application used to test an exploit or ransomware) the DLL using a payload that runs from NTDLL.DLL (so, it's run in userland), but the driver doesn't perform any validation of this DLL (not its signature, not its hash, etc.). A person can change this DLL in a local way, or with a remote connection, to a malicious DLL with the same name -- and when the product is used, this malicious DLL will be loaded, aka a DLL Hijacking attack.

NVD Source

Technical Analysis

CVE-2018-6318 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.