Security readout for executives and security teams
Plain-English summary
This CVE describes clipboard data exposure on Samsung mobile devices running Android O (8.x). The issue involves the Emergency Dialer when a USB device is connected. The sources do not provide CVSS, model list, exploit evidence, or detailed remediation beyond Samsung’s November 2018 SVE reference.
Executive priority
Treat this as a legacy mobile exposure issue. Priority should be driven by whether Samsung Android 8.x devices remain in business use, especially where users handle sensitive data on mobile devices.
Technical view
CVE-2018-21046 maps to Samsung SVE-2018-12911 from November 2018. The reported behavior is clipboard data exposure through the Emergency Dialer after USB connection on Samsung O(8.x) software. Public data lacks CWE, CVSS vector, affected model granularity, and patch-specific details.
Likely exposure
Exposure appears limited to Samsung mobile devices running Android O(8.x). The public CVE data does not identify exact models, carriers, builds, or patch levels, so asset inventory and Samsung advisory checks are required.
Exploitation context
No active exploitation is cited in the source bundle, and the CVE is not marked as KEV. The described condition suggests local physical interaction involving USB connection and the Emergency Dialer, but public evidence is sparse.
Researcher notes
The public record is thin: no CVSS, CWE, model list, or detailed fix text is provided. Avoid assuming exploitability beyond clipboard exposure through Emergency Dialer plus USB connection. Validate against Samsung’s SVE entry and device patch data.
Mitigation direction
- Review Samsung guidance for SVE-2018-12911 and the November 2018 security update.
- Identify Samsung Android O(8.x) devices still in use or retained as spares.
- Update affected devices to vendor-supported software where available.
- Restrict USB access on unvalidated devices using existing MDM controls where supported.
- Remove or replace devices that cannot receive relevant Samsung security updates.
Validation and detection
- Inventory Samsung mobile devices by OS version, model, and security patch level.
- Check whether any Samsung Android O(8.x) devices remain active.
- Compare device patch levels against Samsung’s November 2018 SVE-2018-12911 guidance.
- Confirm MDM policies for USB behavior on any remaining legacy devices.
- Document unsupported or unverifiable devices for remediation tracking.
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-2018-21046 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.