CVE-2021-23888: McAfee ePO unvalidated URL redirect vulnerability

Severity: medium (CVSS 6.3 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: 2021-03-26 · updated 2026-06-17
Weakness: CWE-601

Description

Unvalidated client-side URL redirect vulnerability in McAfee ePolicy Orchestrator (ePO) prior to 5.10 Update 10 could cause an authenticated ePO user to load an untrusted site in an ePO iframe which could steal information from the authenticated user.

Affected products

McAfee,LLC McAfee ePolicy Orchestrator (ePO): before 5.10.0; 5.10.0, 5.10.0-update_1, 5.10.0-update_2, 5.10.0-update_3, 5.10.0-update_4, 5.10.0-update_5 (+4) — 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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