Vulnerability in Coolkit Ewelink
CVE-2021-27941
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.6 (Medium). Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.002 (10.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 11th percentile — 10.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- play.google.com/store/apps/details (Product, Third Party Advisory)
- apps.apple.com/us/app/ewelink-smart-home/id1035163158 (Product, Third Party Advisory)
- github.com/salgio/eWeLink-QR-Code (Third Party Advisory)
Frequently asked questions
- What is CVE-2021-27941?
- CVE-2021-27941 is a medium-severity vulnerability in Coolkit Ewelink, classified under Insufficiently Protected Credentials. CVSS score: 4.6/10. Published 2021-05-06.
- How severe is CVE-2021-27941?
- Medium severity. CVSS v3 base score is 4.6 out of 10.
- Is CVE-2021-27941 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.