Privilege escalation vulnerability in McAfee Web Gateway (MWG) UI

published 2021-02-17 5y ago modified 2026-06-17 4mo ago also EUVD-2021-10811

cvss: 9.0; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 1.1%; EPSS 1.1% chance of exploitation in 30 days, percentile 65%
public exploits: 0; none known

Privilege escalation vulnerability in McAfee Web Gateway (MWG) prior to 9.2.8 allows an authenticated user to gain elevated privileges through the User Interface and execute commands on the appliance via incorrect improper neutralization of user input in the troubleshooting page.

Patch / fix

fixed in 1

McAfee,LLC McAfee Web Gateway (MWG) 9.2.8

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Exploit prediction

1.09% chance of exploitation in the next 30 days, higher than 65% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
CNA	3.1	9.0	CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
NVD	3.1	8.8	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD	2.0	9.0	AV:N/AC:L/Au:S/C:C/I:C/A:C

Affected products

McAfee,LLC McAfee Web Gateway (MWG)

Classification

Weakness

CWE-269 Improper Privilege Management

References

kc.mcafee.com /corporate/index?page=content&id=SB10349

Sources

CVE List CVE-2021-23885
NVD CVE-2021-23885

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