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CVE-2021-27941

nvd nist
Published: May 6, 2021Modified: Jun 17, 2026

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4.6
Vector
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Exploitability: 0.9 / Impact: 3.6
Source: NVD

Description

Unconstrained Web access to the device's private encryption key in the QR code pairing mode in the eWeLink mobile application (through 4.9.2 on Android and through 4.9.1 on iOS) allows a physically proximate attacker to eavesdrop on Wi-Fi credentials and other sensitive information by monitoring the Wi-Fi spectrum during a device pairing process.

Affected (2)

Products: Coolkit: Ewelink
Coolkit
1 product
Ewelink
Configuration A
2 vulnerable
Vulnerable SoftwareAffected Versions
Coolkit
Ewelink
Up to 4.9.2
Ewelink
Up to 4.9.1

Related CWEs

CWE-522
Insufficiently Protected Credentials
The product transmits or stores authentication credentials, but it uses an insecure method that is susceptible to unauthorized interception and/or retrieval.

References (6)

Source: cve@mitre.org
ProductThird Party Advisory
Source: cve@mitre.org
Third Party Advisory
Source: cve@mitre.org
ProductThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
ProductThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
ProductThird Party Advisory

Timeline

No history available yet.