CVE-2018-6703: Remote Logging functionality had a use after free vulnerability in McAfee Agent

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 3.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2018-12-11 · updated 2026-06-17
Weakness: CWE-416

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.

Affected products

McAfee,LLC McAfee Agent for Windows: from 5.0.0 before 5.6.0 — fixed in 5.6.0

How to fix

Upgrade to a fixed version: McAfee,LLC McAfee Agent for Windows 5.6.0. Check the vendor advisory for mitigations.

References

https://kc.mcafee.com/corporate/index?page=content&id=SB10258
https://kc.mcafee.com/corporate/index?page=content&id=SB10258

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