What’s Vulnerable › Vulnerabilities

CVE-2020-12702

• Severity: medium (CVSS 4.6 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-02-24 · updated 2026-06-17
• Weakness: CWE-327

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.

Affected products

• CoolKit Ewelink: through 4.9.1; through 4.9.2

References

• https://dl.acm.org/doi/abs/10.1145/3411498.3419965
• https://github.com/salgio/ESPTouchCatcher
• https://play.google.com/store/apps/details?id=com.coolkit&hl=en_US
• https://www.youtube.com/watch?v=DghYH7WY6iE&feature=youtu.be
• https://dl.acm.org/doi/abs/10.1145/3411498.3419965
• https://github.com/salgio/ESPTouchCatcher
• https://play.google.com/store/apps/details?id=com.coolkit&hl=en_US
• https://www.youtube.com/watch?v=DghYH7WY6iE&feature=youtu.be

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