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CVE Record

CVE-2023-21427: Improper access control vulnerability in NfcTile prior to SMR Jan-2023 Release 1 allows to attacker to use...

Improper access control vulnerability in NfcTile prior to SMR Jan-2023 Release 1 allows to attacker to use NFC without user recognition.

MediumCVSS 5.4Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

This Samsung Mobile vulnerability could let a nearby attacker use NFC through NfcTile without the user recognizing it. The impact is limited: sources indicate no confidentiality loss, with low integrity and availability impact. It matters most for fleets of older or unpatched Samsung devices where NFC is enabled.

Executive priority

Treat this as a moderate mobile fleet hygiene issue. It is not marked as actively exploited in the supplied sources, but unpatched Samsung devices with NFC enabled should be updated during normal security maintenance cycles.

Technical view

CVE-2023-21427 is a CWE-284 improper access control issue in Samsung NfcTile before SMR Jan-2023 Release 1. It affects Samsung Mobile Devices on R(11), S(12), and T(13). CVSS 3.1 is 5.4 with adjacent attack vector, low complexity, no privileges, and no user interaction.

Likely exposure

Exposure is likely limited to Samsung Mobile Devices running Android R(11), S(12), or T(13) that have not received Samsung SMR Jan-2023 Release 1 or later. Practical exposure depends on device proximity, NFC availability, and enterprise patch posture.

Exploitation context

The supplied sources do not show CISA KEV listing or active exploitation. The CVSS vector indicates adjacent access, no privileges, and no user interaction. Public details are sparse, so exploitation feasibility should not be overstated beyond the vendor description.

Researcher notes

The record gives limited technical detail beyond NfcTile improper access control and the impact statement. Avoid assuming affected models beyond Samsung Mobile Devices on R, S, and T. Validate scope through Samsung advisory coverage and device patch levels.

Mitigation direction

  • Apply Samsung SMR Jan-2023 Release 1 or later where available.
  • Prioritize updates for managed Samsung devices with NFC enabled.
  • Check Samsung’s security update page for model-specific availability.
  • Disable NFC where business workflows do not require it.
  • Monitor MDM compliance for Android security patch levels.

Validation and detection

  • Inventory Samsung devices running Android 11, 12, or 13.
  • Confirm each device’s Android security patch level is January 2023 or later.
  • Review MDM reports for NFC-enabled devices that remain unpatched.
  • Validate remediation through vendor patch status, not exploit reproduction.
Prepared
Confidence
high
Sources
3

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

cwe · medium confidence lookup

CWE-284: Authorization and privilege behavior lookup

Authorization weaknesses can support privilege escalation and valid-account review, depending on exploit path. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.

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cve · low confidence lookup

CVE-2023-21427 mapping review

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Vulnerability profileCVE Program record
Severity
Medium
CVSS
5.4 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

1CVSS vectors
0Timeline events
0ADP providers
2Source links

CVSS vector scores

1 official score

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
5.4CVSS 3.1MediumCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L2.82.5Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

5.4Medium
CVSS 3.1 vector shape for CVE-2023-21427Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
Samsung MobileSamsung Mobile DevicesR(11), S(12), T(13)Listed
Weakness

CWE details

CWE-284

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.