CVE-2020-12702

Name: CVE-2020-12702
Creator: NVD / NIST
Published: 2021-02-24T14:15:13.15+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.6/10EPSS 0.31%

Last modified Jun 17, 2026

CVE-2020-12702 is a medium-severity vulnerability rated 4.6/10 on the CVSS scale. Weak encryption in the Quick Pairing mode in the eWeLink mobile application (Android application V4.9.2 and earlier, iOS application V4.9.1 and earlier) allows physically proximate attackers to eavesdrop on Wi-Fi credentials and other sensitive information by monitoring the Wi-Fi spectrum during the pairing process.. EPSS estimates a 0.31% chance of exploitation in the next 30 days.

Description

Weak encryption in the Quick Pairing mode in the eWeLink mobile application (Android application V4.9.2 and earlier, iOS application V4.9.1 and earlier) allows physically proximate attackers to eavesdrop on Wi-Fi credentials and other sensitive information by monitoring the Wi-Fi spectrum during the pairing process.

Metrics

CVSS 3.1

4.6/10

CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS Probability

0.31%

22.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-327

Affected Software

Vendor	Product	Versions
Coolkit	Ewelink	<= 4.9.1
Coolkit	Ewelink	<= 4.9.2

References

https://dl.acm.org/doi/abs/10.1145/3411498.3419965Third Party Advisory
https://github.com/salgio/ESPTouchCatcherExploit, Third Party Advisory
https://play.google.com/store/apps/details?id=com.coolkit&hl=en_USProduct, Third Party Advisory
https://www.youtube.com/watch?v=DghYH7WY6iE&feature=youtu.beExploit, Third Party Advisory
https://dl.acm.org/doi/abs/10.1145/3411498.3419965Third Party Advisory
https://github.com/salgio/ESPTouchCatcherExploit, Third Party Advisory
https://play.google.com/store/apps/details?id=com.coolkit&hl=en_USProduct, Third Party Advisory
https://www.youtube.com/watch?v=DghYH7WY6iE&feature=youtu.beExploit, Third Party Advisory

Timeline

Published: Feb 24, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-12702?

How severe is CVE-2020-12702?

CVE-2020-12702 has a CVSS score of 4.6/10 (MEDIUM severity). The EPSS model estimates a 0.31% probability of exploitation in the next 30 days.

How do I fix CVE-2020-12702?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-12702?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST