CVE-2021-31843: Improper access control vulnerability in McAfee ENS for Windows

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-09-17 · updated 2026-06-17
Weakness: CWE-59

Description

Improper privileges management vulnerability in McAfee Endpoint Security (ENS) Windows prior to 10.7.0 September 2021 Update allows local users to access files which they would otherwise not have access to via manipulating junction links to redirect McAfee folder operations to an unintended location.

Affected products

McAfee LLC McAfee Endpoint Security (ENS): before 10.7.0; 10.7.0, 10.7.0-april_2020, 10.7.0-april_2021, 10.7.0-february_2020, 10.7.0-february_2021, 10.7.0-july_2020 (+3) — fixed in 10.7.0

How to fix

Upgrade to a fixed version: McAfee LLC McAfee Endpoint Security (ENS) 10.7.0. Check the vendor advisory for mitigations.

References

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