CVE-2020-13702

Severity: critical (CVSS 10.0 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.2% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2020-06-11 · updated 2026-06-17
Weakness: CWE-200

Description

The Rolling Proximity Identifier used in the Apple/Google Exposure Notification API beta through 2020-05-29 enables attackers to circumvent Bluetooth Smart Privacy because there is a secondary temporary UID. An attacker with access to Beacon or IoT networks can seamlessly track individual device movement via a Bluetooth LE discovery mechanism.

Affected products

The Rolling Proximity Identifier Project The Rolling Proximity Identifier: through 2020-05-29

References

https://blog.google/documents/70/Exposure_Notification_-_Bluetooth_Specification_v1.2.2.pdf
https://github.com/google/exposure-notifications-internals/commit/8f751a666697
https://github.com/google/exposure-notifications-internals/commit/8f751a666697c3cae0a56ae3464c2c6cbe31b69e
https://github.com/normanluhrmann/infosec/raw/master/exposure-notification-vulnerability-20200611.pdf
https://github.com/normanluhrmann/infosec/raw/master/exposure-notification-vulnerability-20200616-2.pdf
https://github.com/normanluhrmann/infosec/raw/master/exposure-notification-vulnerability-20200616.pdf
https://blog.google/documents/70/Exposure_Notification_-_Bluetooth_Specification_v1.2.2.pdf
https://github.com/google/exposure-notifications-internals/commit/8f751a666697
https://github.com/google/exposure-notifications-internals/commit/8f751a666697c3cae0a56ae3464c2c6cbe31b69e
https://github.com/normanluhrmann/infosec/raw/master/exposure-notification-vulnerability-20200611.pdf
https://github.com/normanluhrmann/infosec/raw/master/exposure-notification-vulnerability-20200616-2.pdf
https://github.com/normanluhrmann/infosec/raw/master/exposure-notification-vulnerability-20200616.pdf

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