Security readout for executives and security teams
Plain-English summary
CVE-2023-21424 affects Samsung Mobile devices before the January 2023 SMR Release 1. A local attacker could change network-related values such as network code, carrier ID, and operator brand. The issue is medium severity and mainly threatens device integrity and availability rather than data confidentiality.
Executive priority
Treat this as a moderate mobile-fleet hygiene issue. It is not documented as exploited, but it can alter network identity-related settings on unpatched Samsung devices. Ensure enterprise Samsung devices are at or beyond the January 2023 Samsung maintenance release.
Technical view
The flaw is improper privilege/permission handling in SemChameleonHelper on Samsung Mobile Devices running Android R(11), S(12), and T(13). CVSS 3.1 is 5.1: local access, low complexity, no privileges, no user interaction, with low integrity and availability impact.
Likely exposure
Exposure is limited to affected Samsung Mobile Devices on Android 11, 12, or 13 that have not received SMR Jan-2023 Release 1 or later. Enterprise fleets with unmanaged or slow-patching Android devices are the most likely residual exposure.
Exploitation context
The supplied sources do not show active exploitation, and this CVE is not marked KEV. The attack vector is local, so exploitation requires access on or through the affected device context, but no exploit details are provided in the sources.
Researcher notes
Public detail is limited to the CVE description, CVSS vector, affected Android generations, and Samsung advisory reference. Avoid assuming broader Android impact, remote exploitability, or specific exploit mechanics beyond local improper permission handling in SemChameleonHelper.
Mitigation direction
- Apply Samsung SMR Jan-2023 Release 1 or later to affected devices.
- Use MDM or EMM policy to require current Samsung security patch levels.
- Prioritize unmanaged Android 11, 12, and 13 Samsung devices for patch verification.
- Check Samsung advisory updates for any model-specific remediation guidance.
Validation and detection
- Inventory Samsung Mobile Devices running Android 11, 12, or 13.
- Verify each device reports SMR Jan-2023 Release 1 or later.
- Review MDM compliance reports for devices below the required patch level.
- Investigate unexpected carrier, operator brand, or network-code changes on affected devices.
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
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ATT&CK lookup starting points
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Open ATT&CK lookupCVE-2023-21424 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:N/I:L/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:N/I:L/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:N/I:L/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.