CVE-2018-6402

HIGHCVSS 7.5/10EPSS 0.24%

Last modified

CVE-2018-6402 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Ecobee Ecobee4 4.2.0.171 devices can be forced to deauthenticate and connect to an unencrypted Wi-Fi network with the same SSID, even if the device settings specify use of encryption such as WPA2, as long as the competing network has a stronger signal. An attacker must be able to set up a nearby SSID, similar to an "Evil Twin" attack.. EPSS estimates a 0.24% chance of exploitation in the next 30 days.

Description

Ecobee Ecobee4 4.2.0.171 devices can be forced to deauthenticate and connect to an unencrypted Wi-Fi network with the same SSID, even if the device settings specify use of encryption such as WPA2, as long as the competing network has a stronger signal. An attacker must be able to set up a nearby SSID, similar to an "Evil Twin" attack.

Metrics

CVSS 3.1
7.5/10

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

EPSS Probability
0.24%

14.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
EcobeeEcobee4 Firmware4.2.0.171

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2018-6402?
Ecobee Ecobee4 4.2.0.171 devices can be forced to deauthenticate and connect to an unencrypted Wi-Fi network with the same SSID, even if the device settings specify use of encryption such as WPA2, as long as the competing network has a stronger signal. An attacker must be able to set up a nearby SSID, similar to an "Evil Twin" attack.
How severe is CVE-2018-6402?
CVE-2018-6402 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.24% probability of exploitation in the next 30 days.
How do I fix CVE-2018-6402?
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-2018-6402?

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

Scan your code now

Source: NVD / NIST