{"cve":"CVE-2021-27941","nvd":{"published":"2021-05-06T21:15:07.597","modified":"2026-06-17T03:45:38.880","status":"Modified","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","score":4.6},"cwes":["CWE-522"],"references":["https://apps.apple.com/us/app/ewelink-smart-home/id1035163158","https://github.com/salgio/eWeLink-QR-Code","https://play.google.com/store/apps/details?id=com.coolkit&hl=en_US","https://apps.apple.com/us/app/ewelink-smart-home/id1035163158","https://github.com/salgio/eWeLink-QR-Code"],"products":["coolkit:ewelink"],"source":"nvd","synced_at":"2026-10-19T21:18:09.669877188+00:00"},"epss":{"cve":"CVE-2021-27941","score":0.00214,"percentile":0.1178,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}