Security readout for executives and security teams
Plain-English summary
This Samsung Mobile issue could let a local attacker control Bluetooth Low Energy advertising without the required permission. The assessed impact is limited but relevant for managed mobile fleets because it bypasses an authorization boundary and may affect privacy or device availability.
Executive priority
Treat this as a moderate mobile fleet hygiene issue, not an emergency. Patch through normal managed-device update cycles, but do not leave older Samsung Android 12 or 13 devices unmanaged or indefinitely deferred.
Technical view
CVE-2023-21423 is an improper authorization flaw in Samsung ChnFileShareKit before SMR Jan-2023 Release 1. The CVSS 3.1 score is 5.1 with local access, low complexity, no privileges, no user interaction, low confidentiality impact, no integrity impact, and low availability impact.
Likely exposure
Exposure is limited to Samsung Mobile Devices running Android S(12) or T(13) that have not received SMR Jan-2023 Release 1 or later. The source bundle does not identify specific device models or deployment configurations.
Exploitation context
The source bundle does not show active exploitation, and CISA KEV is false. The weakness requires local attack context, not a network-reachable service. Public details are sparse and do not describe exploit mechanics beyond unauthorized BLE advertising control through an unprotected action.
Researcher notes
Evidence supports improper authorization in ChnFileShareKit and a local attack vector. The public bundle lacks model-level affected lists, exploit status, proof-of-concept details, and workaround guidance beyond Samsung’s January 2023 security maintenance release reference.
Mitigation direction
- Apply Samsung SMR Jan-2023 Release 1 or later to affected devices.
- Confirm mobile device management compliance for Android 12 and 13 Samsung devices.
- Check Samsung Mobile guidance for any device-specific update availability.
- Prioritize unsupported or update-blocked devices for replacement or isolation.
Validation and detection
- Inventory Samsung Mobile devices running Android 12 or Android 13.
- Verify each device security patch level includes SMR Jan-2023 Release 1 or later.
- Review MDM reports for devices missing January 2023 Samsung security updates.
- Track exceptions where models no longer receive Samsung security maintenance.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
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
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CWE-285: Exact CWE lookup
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Open ATT&CK lookupCVE-2023-21423 mapping review
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Open ATT&CK lookup- Severity
- Medium
- CVSS
- 5.1 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
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.
CVSS vector scores
1 official scoreWe 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.
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L2.52.5Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
5.1MediumVector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
Source materials
- CVE List V5 sourceCVE List V5
- https://security.samsungmobile.com/securityUpdate.smsb?year=2023&month=01CVE reference
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Authorization
Improper Authorization represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.