CVE-2021-21552

Low-privilege restriction bypass

Published May 21, 2021 · Updated Sep 16, 2024

Improper authorization in Dell Wyse Windows Embedded System WIE10 LTSC 2019 and earlier allows local users to bypass its restricted environment. Dell has not disclosed the affected component or the incorrect authorization operation that accepts a low-privilege user's action. A locally authenticated low-privilege account is required, and successful exploitation permits unauthorized actions outside the intended system restrictions.

CVSS severity5.2
Medium
EPSS probability1.00%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Improper authorization in Dell Wyse Windows Embedded System WIE10 LTSC 2019 and earlier allows local users to bypass its restricted environment. Dell has not disclosed the affected component or the incorrect authorization operation that accepts a low-privilege user's action. A locally authenticated low-privilege account is required, and successful exploitation permits unauthorized actions outside the intended system restrictions.

The record

CVE
CVE-2021-21552
Published
May 21, 2021
Updated
Sep 16, 2024
Vendor
Dell
Product
Wyse Windows Embedded
Classifications
CWE-863, T1548
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 21, 2021CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=unspecified <=WIE10 LTSC 2019

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Dell · Wyse Windows Embeddedversion=unspecified <=WIE10 LTSC 2019

Published CVSS scores

5.2DellCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
7.2INCIBE-CERTAV:L/AC:L/Au:N/C:C/I:C/A:C
8.8INCIBE-CERTCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-863Incorrect Authorization
T1548Abuse Elevation Control Mechanism

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo