CVE-2021-31835: McAfee ePO Cross-Site Scripting vulnerability

Severity: medium (CVSS 4.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-10-22 · updated 2026-06-17
Weakness: CWE-79

Description

Cross-Site Scripting vulnerability in McAfee ePolicy Orchestrator (ePO) prior to 5.10 Update 11 allows ePO administrators to inject arbitrary web script or HTML via a specific parameter where the administrator's entries were not correctly sanitized.

Affected products

McAfee,LLC McAfee ePolicy Orchestrator (ePO): before 5.10.0; 5.10.0, 5.10.0-update_1, 5.10.0-update_10, 5.10.0-update_2, 5.10.0-update_3, 5.10.0-update_4 (+5) — fixed in 5.10.0

How to fix

Upgrade to a fixed version: McAfee,LLC McAfee ePolicy Orchestrator (ePO) 5.10.0. Check the vendor advisory for mitigations.

References

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