CVE-2021-31839: Incorrect permissions on McAfee Agent for Windows event folder

Severity: low (CVSS 3.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-06-10 · updated 2026-06-17
Weakness: CWE-269

Description

Improper privilege management vulnerability in McAfee Agent for Windows prior to 5.7.3 allows a local user to modify event information in the MA event folder. This allows a local user to either add false events or remove events from the event logs prior to them being sent to the ePO server.

Affected products

McAfee,LLC McAfee Agent for Windows: from 5.0.0 before 5.7.3 — fixed in 5.7.3

How to fix

Upgrade to a fixed version: McAfee,LLC McAfee Agent for Windows 5.7.3. Check the vendor advisory for mitigations.

References

https://kc.mcafee.com/corporate/index?page=content&id=SB10362
https://kc.mcafee.com/corporate/index?page=content&id=SB10362

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