CVE-2021-25442

MDM-user authentication bypass

Published Jul 8, 2021 · Updated Aug 3, 2024

Authentication bypass in Samsung Knox Mobile Enrollment before KCS 1.39 allows attackers to bypass Knox Manage authentication. Samsung identifies improper MDM policy management in the KME module as the cause but has not published the faulty operation or controllable input. Exploitation requires an MDM user context, and the reported consequence is limited to bypassing Knox Manage authentication.

CVSS severity7.5
High
EPSS probability0.92%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in Samsung Knox Mobile Enrollment before KCS 1.39 allows attackers to bypass Knox Manage authentication. Samsung identifies improper MDM policy management in the KME module as the cause but has not published the faulty operation or controllable input. Exploitation requires an MDM user context, and the reported consequence is limited to bypassing Knox Manage authentication.

The record

CVE
CVE-2021-25442
Published
Jul 8, 2021
Updated
Aug 3, 2024
Vendor
Samsung Electronics
Product
Knox Mobile Enrollment
Classifications
CWE-287, CWE-269
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Jul 8, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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

  1. Affected versionversion=- <KCS 1.39

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

Samsung Electronics · Knox Mobile Enrollmentversion=- <KCS 1.39

Published CVSS scores

7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
5.0NIST NVDAV:N/AC:L/Au:N/C:N/I:P/A:N

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)
VectorUnavailable
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-287Improper Authentication
CWE-269Improper Privilege Management

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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