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CVE Record

CVE-2021-37436: Amazon Echo Dot devices through 2021-07-02 sometimes allow attackers, who have physical access to a device...

Amazon Echo Dot devices through 2021-07-02 sometimes allow attackers, who have physical access to a device after a factory reset, to obtain sensitive information via a series of complex hardware and software attacks. NOTE: reportedly, there were vendor marketing statements about safely removing personal content via a factory reset. Also, the vendor has reportedly indicated that they are working on mitigations.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

Factory-reset Echo Dot devices may still retain sensitive personal data. The risk mainly appears when someone gets physical possession of a reset device and can perform complex hardware and software analysis. This is most relevant to device resale, recycling, returns, labs, and offices disposing of smart speakers.

Executive priority

Handle as a disposal and custody risk, not an emergency internet-facing vulnerability. Prioritize executive, office, and lab devices that may have connected to sensitive networks before resale, return, or recycling.

Technical view

CVE-2021-37436 describes Amazon Echo Dot devices through 2021-07-02 where factory reset did not always remove sensitive information. The CVE requires attacker physical access after reset and complex hardware/software attacks. The source bundle does not provide CVSS, confirmed affected model list, public exploit status, or a completed vendor fix.

Likely exposure

Exposure is likely limited to organizations or individuals that used Echo Dot devices on sensitive networks, then lost custody, resold, returned, recycled, or discarded them after only a factory reset.

Exploitation context

The source bundle does not show active exploitation, and CISA KEV is false. Abuse requires physical access to a device and non-trivial technical capability, reducing broad internet-scale risk but increasing concern for targeted device recovery or disposal scenarios.

Researcher notes

Evidence is incomplete in the CVE record: no CVSS, CWE, CPE, affected model list, or final fix is supplied. The core claim is persistence of sensitive data after factory reset, requiring physical post-reset access and complex analysis.

Mitigation direction

  • Do not rely on factory reset alone before transferring device custody.
  • Check Amazon guidance for affected models, firmware status, and mitigations.
  • Keep retired Echo Dot devices under controlled custody until disposal decisions are made.
  • Avoid resale or donation of devices previously used in sensitive environments.
  • Review IoT disposal procedures for smart speakers and similar consumer devices.

Validation and detection

  • Inventory Echo Dot devices used in offices, labs, executives' homes, or test environments.
  • Identify devices retired, returned, resold, recycled, or lost after factory reset.
  • Confirm whether affected devices were used with sensitive Wi-Fi or account data.
  • Check Amazon support channels for current remediation or disposal guidance.
  • Document whether disposal controls treat reset IoT devices as potentially sensitive.
Prepared
Confidence
medium
Sources
5

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-2021-37436 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
5Source 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.