CVE-2020-12856

CriticalCVSS 9.8/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.1 9.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected software

Vendor	Product	Versions
n/a	n/a	n/a

References

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

Timeline

Published: May 18, 2020
Last modified: Jun 17, 2026
NVD status: Modified

Related CVEs from 2020

CVE-2020-128577.5Caching 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 CVE-2020-128587.5Non-reinitialisation of random data in the advertising payload in COVIDSafe v1.0.15 and v1.0.16 allows a remote attacker to re-identify Andr CVE-2020-128595.3Unnecessary fields in the OpenTrace/BlueTrace protocol in COVIDSafe through v1.0.17 allow a remote attacker to identify a device model by ob CVE-2020-12868.8A remote code execution vulnerability exists when the Windows Shell does not properly validate file paths.An attacker who successfully explo CVE-2020-128605.3COVIDSafe through v1.0.17 allows a remote attacker to access phone name and model information because a BLE device can have four roles and C CVE-2020-128618.8A heap buffer overflow in SANE Backends before 1.0.30 allows a malicious device connected to the same local network as the victim to execute CVE-2020-128624.3An out-of-bounds read in SANE Backends before 1.0.30 may allow a malicious device connected to the same local network as the victim to read CVE-2020-128634.3An out-of-bounds read in SANE Backends before 1.0.30 may allow a malicious device connected to the same local network as the victim to read CVE-2020-128644.3An out-of-bounds read in SANE Backends before 1.0.30 may allow a malicious device connected to the same local network as the victim to read CVE-2020-128658.0A heap buffer overflow in SANE Backends before 1.0.30 may allow a malicious device connected to the same local network as the victim to exec CVE-2020-128665.7A NULL pointer dereference in SANE Backends before 1.0.30 allows a malicious device connected to the same local network as the victim to cau CVE-2020-128675.5A NULL pointer dereference in sanei_epson_net_read in SANE Backends before 1.0.30 allows a malicious device connected to the same local netw