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Fencer Vulns
medium 6.3

CVE-2021-23888 json

McAfee ePO unvalidated URL redirect vulnerability

published 2021-03-26 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-10814

cvss
6.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.6%
EPSS 0.6% chance of exploitation in 30 days, percentile 50%
public exploits
0
none known

Summary

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.

Patch / fix

  • McAfee,LLC McAfee ePolicy Orchestrator (ePO) 5.10 CU 10

Exploit prediction

0.62% chance of exploitation in the next 30 days, higher than 50% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 6.3 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N
NVD 3.1 6.3 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N
NVD 2.0 4.9 AV:N/AC:M/Au:S/C:P/I:P/A:N

Affected products

  • McAfee,LLC McAfee ePolicy Orchestrator (ePO)

Classification

Weakness
  • CWE-601 URL Redirection to Untrusted Site

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.