CVE-2021-31842

Severity: medium (CVSS 5.5 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: 2021-09-17 · updated 2026-06-17
Weakness: CWE-776

Description

XML Entity Expansion injection vulnerability in McAfee Endpoint Security (ENS) for Windows prior to 10.7.0 September 2021 Update allows a local user to initiate high CPU and memory consumption resulting in a Denial of Service attack through carefully editing the EPDeploy.xml file and then executing the setup process.

Affected products

McAfee LLC McAfee Endpoint Security (ENS): before 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, 10.7.0-june_2021 (+2) — 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

Get alerted when CVE-2021-31842 or the next vulnerability affects your stack