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CVE Record

CVE-2018-20007: Yeelight Smart AI Speaker 3.3.10_0074 devices have improper access control over the UART interface, allowin...

Yeelight Smart AI Speaker 3.3.10_0074 devices have improper access control over the UART interface, allowing physical attackers to obtain a root shell. The attacker can then exfiltrate the audio data, read cleartext Wi-Fi credentials in a log file, or access other sensitive device and user information.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

This issue affects Yeelight Smart AI Speaker firmware 3.3.10_0074. Someone with physical access could use the exposed UART interface to gain root-level control and access sensitive user data, including audio data and cleartext Wi-Fi credentials. It is mainly a physical-access and device custody risk, not a remotely confirmed internet-scale threat.

Executive priority

Prioritize if these speakers are deployed in offices, meeting rooms, executive areas, or guest-accessible spaces. The business concern is privacy and credential exposure after physical tampering, not proven active exploitation from the internet.

Technical view

CVE-2018-20007 is improper access control on the device UART interface. The CVE description states a physical attacker can obtain a root shell, then read audio data, cleartext Wi-Fi credentials in a log file, and other sensitive device or user information. No CVSS, CWE, CPE, patch, or mitigation details are included in the provided bundle.

Likely exposure

Exposure is limited to environments using Yeelight Smart AI Speaker devices running firmware 3.3.10_0074. The bundle does not provide CPEs or broader affected-version ranges. Risk is highest where devices are in shared, public, guest-accessible, or poorly controlled physical spaces.

Exploitation context

The provided sources do not show CISA KEV listing or active exploitation. The described attack requires physical access to the device UART interface. The impact is serious because root access can expose credentials, audio data, and user information, but the bundle does not support claims of remote exploitation.

Researcher notes

Evidence is incomplete: no CVSS vector, CWE, CPE, affected-version range, exploit status, or vendor fix is included. Treat the CVE description as authoritative for impact, but avoid extrapolating beyond Yeelight Smart AI Speaker firmware 3.3.10_0074 without vendor confirmation.

Mitigation direction

  • Check Yeelight guidance for fixed firmware or official remediation.
  • Remove affected devices from sensitive or public-accessible areas.
  • Physically secure devices to prevent unauthorized hardware access.
  • Rotate Wi-Fi credentials if device tampering is suspected.
  • Segment smart speakers onto a restricted IoT network.

Validation and detection

  • Inventory Yeelight Smart AI Speaker firmware versions.
  • Confirm whether any devices run 3.3.10_0074.
  • Review physical placement and custody controls for affected devices.
  • Check for signs of tampering before trusting device data.
  • Verify whether vendor remediation exists before redeployment.
Prepared
Confidence
medium
Sources
4

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.

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CVE-2018-20007 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
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.

0CVSS vectors
0Timeline events
0ADP providers
3Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

No CWE listed

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