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Vulnerability record · CVE-2020-12856 · published 18 May 2020

CVE-2020-12856: Alberta abtracetogether vulnerability

Alberta · Abtracetogether

OpenTrace, as used in COVIDSafe through v1.0.17, TraceTogether, ABTraceTogether, and other applications on iOS and Android, allows remote attackers to conduct long-term re-identification attacks and possibly have unspecified other impact, because of how Bluetooth is used.

9.8 CVSS 3.1 Critical EPSS 5.1% · top 7.9%
9.8CVSS 3.1 base score, v2 7.5
5.1%EPSS exploitation probability, 30 days
NoNot in CISA KEV
3Affected product versions listed by NVD
6References
17 Jun 2026Last modified by NVD

Description

OpenTrace, as used in COVIDSafe through v1.0.17, TraceTogether, ABTraceTogether, and other applications on iOS and Android, allows remote attackers to conduct long-term re-identification attacks and possibly have unspecified other impact, because of how Bluetooth is used.

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

Affected products

3 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://covidsafe.watch/issue-register/cve-2020-12856-long-term-tracking-and-possibly-enables-other-bluetooth-based-atta Third Party Advisory
https://docs.google.com/document/d/1u5a5ersKBH6eG362atALrzuXo3zuZ70qrGomWVEC27U/edit?usp=sharing Third Party Advisory
https://github.com/alwentiu/COVIDSafe-CVE-2020-12856/blob/master/README.md Third Party Advisory
https://covidsafe.watch/issue-register/cve-2020-12856-long-term-tracking-and-possibly-enables-other-bluetooth-based-atta Third Party Advisory
https://docs.google.com/document/d/1u5a5ersKBH6eG362atALrzuXo3zuZ70qrGomWVEC27U/edit?usp=sharing Third Party Advisory
https://github.com/alwentiu/COVIDSafe-CVE-2020-12856/blob/master/README.md Third Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

7.5CVE-2020-12857Health covidsafe vulnerabilityCaching of GATT characteristic values (TempID) in COVIDSafe v1.0.15 and v1.0.16 allows a remote attacker to long-term re-identify an Android device r…EPSS 1.6%7.5CVE-2020-12858Health covidsafe vulnerabilityNon-reinitialisation of random data in the advertising payload in COVIDSafe v1.0.15 and v1.0.16 allows a remote attacker to re-identify Android devic…EPSS 1.8%6.5CVE-2020-12717Alberta abtracetogether vulnerabilityThe COVIDSafe (Australia) app 1.0 and 1.1 for iOS allows a remote attacker to crash the app, and consequently interfere with COVID-19 contact tracing…EPSS 1.4%5.7CVE-2020-14292Health covidsafe vulnerabilityIn the COVIDSafe application through 1.0.21 for Android, unsafe use of the Bluetooth transport option in the GATT connection allows attackers to tric…EPSS 1.3%5.3CVE-2020-12859Health covidsafe cleartext storage of sensitive data vulnerabilityUnnecessary fields in the OpenTrace/BlueTrace protocol in COVIDSafe through v1.0.17 allow a remote attacker to identify a device model by observing c…EPSS 0.69%5.3CVE-2020-12860Health covidsafe improper privilege management vulnerabilityCOVIDSafe through v1.0.17 allows a remote attacker to access phone name and model information because a BLE device can have four roles and COVIDSafe …EPSS 1.0%

Source: NIST National Vulnerability Database (record CVE-2020-12856), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.