Security readout for executives and security teams
Plain-English summary
This flaw could let someone with access to a locked Samsung phone see clipboard contents because keyboard input was available during emergency-call use. The business risk is exposure of recently copied secrets, messages, or credentials on older, unpatched devices.
Executive priority
Treat this as a legacy mobile confidentiality issue. Prioritize identifying unpatched Samsung devices used by staff handling credentials, customer data, or sensitive communications.
Technical view
CVE-2018-21077 is a Samsung mobile locked-state clipboard content disclosure affecting devices running Android M(6.0), N(7.x), and O(8.x). The issue is tracked by Samsung as SVE-2017-11107 in the April 2018 bulletin. No CVSS, CWE, or product-specific CPE data is provided.
Likely exposure
Exposure is most likely in fleets with older Samsung Android devices or stale security patch levels. The source indicates locked-state disclosure, so practical exposure appears tied to access to the device, not remote network reachability.
Exploitation context
The provided sources do not report active exploitation, and this CVE is not listed as KEV. Evidence is limited to the disclosed locked-state clipboard exposure mechanism and Samsung advisory reference.
Researcher notes
Public data is sparse: no CVSS vector, CWE, CPE list, exploit evidence, or detailed patch notes are included. Analysis should stay scoped to Samsung M/N/O devices and Samsung ID SVE-2017-11107.
Mitigation direction
- Check Samsung guidance for SVE-2017-11107 and CVE-2018-21077.
- Verify affected devices received the April 2018 Samsung security update or later.
- Retire or isolate Samsung devices stuck on M, N, or O without vendor patches.
- Reduce clipboard use for passwords or sensitive data on legacy mobile devices.
Validation and detection
- Inventory Samsung mobile devices by Android version and patch level.
- Identify devices running M(6.0), N(7.x), or O(8.x).
- Confirm whether April 2018 or later Samsung security patches are installed.
- Use MDM reporting rather than testing clipboard exposure on user 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
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-2018-21077 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.