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CVE Record

CVE-2018-3947: An exploitable information disclosure vulnerability exists in the phone-to-camera communications of Yi Home...

An exploitable information disclosure vulnerability exists in the phone-to-camera communications of Yi Home Camera 27US 1.8.7.0D. An attacker can sniff network traffic to exploit this vulnerability.

CriticalCVSS 9Not KEV-listedUpdated
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Glexia's TakeAutomated analysiscritical

Security readout for executives and security teams

Plain-English summary

This vulnerability affects Yi Home Camera 27US firmware 1.8.7.0D. If an attacker can observe phone-to-camera network traffic, sensitive information may be exposed. The provided sources rate it critical, but they do not show active exploitation or name a confirmed patch.

Executive priority

Treat as priority if these cameras are in business, customer, or sensitive physical spaces. The practical urgency depends on deployment presence and network trust, because the cited exploitation condition is traffic observation rather than confirmed remote mass exploitation.

Technical view

CVE-2018-3947 is an information disclosure flaw in phone-to-camera communications for Yi Home Camera 27US 1.8.7.0D. CVSS 3.0 is 9.0 with network attack vector, high complexity, no privileges, no user interaction, changed scope, and high confidentiality, integrity, and availability impact.

Likely exposure

Exposure is limited to environments using the affected Yi Home Camera 27US firmware version. Risk is highest where attackers can observe local or adjacent network traffic between mobile phones and cameras. The provided sources do not establish broad internet exposure.

Exploitation context

The source bundle states exploitation requires sniffing network traffic. KEV is false, and no provided source reports active exploitation in the wild. Evidence is insufficient to claim public weaponization or ongoing attacks.

Researcher notes

The record lacks CWE mapping, patch details, and exploit-in-the-wild evidence. Analysis should stay anchored to Yi Home Camera 27US 1.8.7.0D and Talos report TALOS-2018-0616 until vendor or advisory data confirms broader scope.

Mitigation direction

  • Inventory Yi Home Camera 27US devices and identify firmware version 1.8.7.0D.
  • Check Yi Technology guidance for firmware updates or vendor-recommended mitigations.
  • Place affected cameras on isolated, trusted network segments.
  • Restrict untrusted Wi-Fi or LAN access near camera/mobile communications.
  • Retire or replace affected devices if no supported fix is available.

Validation and detection

  • Confirm whether any Yi Home Camera 27US devices are deployed.
  • Record firmware versions and compare against 1.8.7.0D.
  • Review network segmentation for cameras and mobile controller devices.
  • Check security monitoring for unexpected local network observers or rogue wireless access.
  • Document vendor advisory status and remediation decisions.
Prepared
Confidence
medium
Sources
3

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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-2018-3947 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

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Vulnerability profileCVE Program record
Severity
Critical
CVSS
9 (3.0)
Known Exploited
No
Published

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

Official CVE source material

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.

1CVSS vectors
0Timeline events
0ADP providers
2Source links

CVSS vector scores

1 official score

We 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.

ScoreVersionSeverityVectorExploitImpactSource
9CVSS 3.0CriticalCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H2.26Primary CVE score

Vulnerability scoring details

Base CVSS 3.0 score

9Critical
CVSS 3.0 vector shape for CVE-2018-3947Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
YiYi TechnologyYi Technology Home Camera 27US 1.8.7.0DListed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.