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TI-2021-09269 Aliases CVE-2021-27941GHSA-qrrq-x7wc-w5x9

Unconstrained Web access to the device's private encryption key in the QR code pairing…

Priority LOW 21CWE-522Published · Updated

Key facts

Attack vector
Physical
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Information disclosure
Confidentiality · integrity · availability
High · None · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-522.

Summary

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.

Why it matters now

EPSS 0.00214 11th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:coolkit:ewelink:*:*:*:*:*:iphone_os:*:*up to 4.9.1VulnerableCoolKIt
cpe:2.3:a:coolkit:ewelink:*:*:*:*:*:android:*:*up to 4.9.2VulnerableCoolKIt
  • cpe:2.3:a:coolkit:ewelink:*:*:*:*:*:iphone_os:*:* Versions up to 4.9.1 Vulnerable ·CoolKIt
  • cpe:2.3:a:coolkit:ewelink:*:*:*:*:*:android:*:* Versions up to 4.9.2 Vulnerable ·CoolKIt

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-27941
  2. 2026-10-03 Alias added: GHSA-qrrq-x7wc-w5x9

References

Advisory 3

  • TI-2023-06397 Lockscreen bypass in eWeLink App CVSS 3.1HIGH 7.7
  • TI-2020-10100 Weak encryption in the Quick Pairing mode in the eWeLink mobile application (Android… CVSS 3.1MEDIUM 4.6

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences