CVE-2023-21427

Unauthorized NFC use via missing NfcTile permission

Published Feb 9, 2023 · Updated Mar 24, 2025

Improper access control in Samsung Mobile Devices before SMR Jan-2023 Release 1 allows attackers to use NFC without user recognition. The NfcTile component lacks the permission needed to prevent unauthorized access, allowing an unrecognized caller to activate or use NFC. The attack is adjacent and unauthenticated, and the documented effect is limited to unauthorized NFC use rather than data disclosure.

CVSS severity5.4
Medium
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper access control in Samsung Mobile Devices before SMR Jan-2023 Release 1 allows attackers to use NFC without user recognition. The NfcTile component lacks the permission needed to prevent unauthorized access, allowing an unrecognized caller to activate or use NFC. The attack is adjacent and unauthenticated, and the documented effect is limited to unauthorized NFC use rather than data disclosure.

The record

CVE
CVE-2023-21427
Published
Feb 9, 2023
Updated
Mar 24, 2025
Vendor
Samsung Electronics Co., Ltd.
Product
Samsung Mobile Devices
Classifications
CWE-284
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 9, 2023CVE publishedPublication date reported by the CVE source.
  2. Mar 24, 2025Record 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=R(11), S(12), T(13) <SMR Jan-2023 Release 1

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Samsung Electronics Co., Ltd. · Samsung Mobile Devicesversion=R(11), S(12), T(13) <SMR Jan-2023 Release 1

Published CVSS scores

5.4Samsung MobileCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
6.5NIST NVDCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/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.

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No observations available

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

Weakness, pattern, technique

CWE-284Improper Access Control

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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