CVE-2021-37436

Sensitive data disclosure after factory reset

Published Jul 24, 2021 · Updated Aug 4, 2024

Information disclosure in Amazon Echo Dot devices through 2021-07-02 allows attackers with physical access to obtain sensitive data after factory reset. Factory reset does not reliably erase residual flash-storage records, which can be recovered through chip-off hardware access and forensic software techniques. The attack requires possession of the reset device and specialized equipment; reported consequences are exposure of Wi-Fi credentials, owner location, and connected-device information without demonstrated modification or service interruption.

CVSS severity4.2
Medium
EPSS probability0.28%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in Amazon Echo Dot devices through 2021-07-02 allows attackers with physical access to obtain sensitive data after factory reset. Factory reset does not reliably erase residual flash-storage records, which can be recovered through chip-off hardware access and forensic software techniques. The attack requires possession of the reset device and specialized equipment; reported consequences are exposure of Wi-Fi credentials, owner location, and connected-device information without demonstrated modification or service interruption.

The record

CVE
CVE-2021-37436
Published
Jul 24, 2021
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
T1005
Attack vector
physical
Privileges
Unavailable

Timeline

How it unfolded

  1. Jul 24, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorphysical
Required privilegesUnavailable in this record.

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

4.2NVDCVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorphysical
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1005Data from Local System

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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