Is CVE-2018-6703 actively exploited?

No active exploitation of CVE-2018-6703 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2018-6703 be exploited remotely?

Yes. CVE-2018-6703 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2018-6703?

CVE-2018-6703 has a CVSS score of 9.8 (CRITICAL).

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CRITICAL

CVE-2018-6703

CWE-416Published: December 11, 2018· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

Use After Free in Remote logging (which is disabled by default) in McAfee McAfee Agent (MA) 5.x prior to 5.6.0 allows remote unauthenticated attackers to cause a Denial of Service and potentially a remote code execution via a specially crafted HTTP header sent to the logging service.

NVD Source

Technical Analysis

CVE-2018-6703 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

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 9.8.

From a weakness classification perspective (CWE-416): Use-after-free vulnerabilities involve accessing memory after it has been freed, often enabling arbitrary code execution.