Security readout for executives and security teams
Plain-English summary
This CVE describes a Samsung Android 8.x device protection weakness. Factory Reset Protection could be bypassed through the voice assistant because Internet access was available before setup completed. The business risk is mainly lost or stolen device control, not remote server compromise.
Executive priority
Treat this as a legacy mobile asset and device-loss control issue. Prioritize if the organization still uses Samsung Android 8.x devices or relies on FRP to protect reset devices.
Technical view
CVE-2018-21047 maps to Samsung SVE-2018-12894 from November 2018. The issue affects Samsung mobile devices running O(8.x) software and involves FRP bypass during Setup Wizard through voice assistant-enabled Internet access. The source bundle provides no CVSS, CWE, model list, exploit confirmation, or detailed fix text.
Likely exposure
Exposure is likely limited to Samsung mobile devices running Android O(8.x), especially unmanaged, legacy, or unpatched devices. Exact affected models and versions are not specified in the provided sources.
Exploitation context
No CISA KEV listing or cited source in the bundle confirms active exploitation. Practical abuse would likely require access to a device during reset or setup, so this is more relevant to lost, stolen, resale, and deprovisioning scenarios.
Researcher notes
Evidence is sparse. The record identifies the FRP bypass condition and Samsung SVE ID, but does not provide CVSS, CWE, affected model granularity, exploit status, or remediation details beyond the Samsung security update reference.
Mitigation direction
- Check Samsung guidance for SVE-2018-12894 and applicable November 2018 updates.
- Inventory Samsung devices still running Android O(8.x).
- Update eligible devices to vendor-supported security maintenance releases.
- Retire or isolate devices that cannot receive relevant Samsung updates.
- Review MDM controls for device reset, enrollment, and deprovisioning workflows.
Validation and detection
- Confirm whether any Samsung Android O(8.x) devices remain in fleet inventory.
- Verify installed Samsung security patch levels against vendor guidance for SVE-2018-12894.
- Check MDM records for unmanaged or recently factory-reset Samsung devices.
- Review lost, stolen, resale, and return workflows for FRP dependency.
- Document any devices without a vendor-supported remediation path.
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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CVE-2018-21047 mapping review
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Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
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 and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://security.samsungmobile.com/securityUpdate.smsbCVE reference · x_refsource_CONFIRM
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.