CVE-2020-12856
9.8
CRITICAL · CVSS 3.1 · EPSS 5.1% (pctl 92)
In your normal cycle
Critical by CVSS (9.8), but no sign of active exploitation.
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.
Scoring
| CVSS | 9.8 (CRITICAL, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 5.14% — more likely to be exploited than 92% of all CVEs |
| On CISA KEV | no |
| Public exploit | none known |
| Published | 2020-05-18 |
| Last modified | 2026-06-17 |
Affected (3)
| Vendor | Product |
|---|---|
| alberta | abtracetogether |
| health | covidsafe |
| tracetogether | tracetogether |
References
- https://covidsafe.watch/issue-register/cve-2020-12856-long-term-tracking-and-possibly-enables-other-bluetooth-based-attack-vectors
- https://docs.google.com/document/d/1u5a5ersKBH6eG362atALrzuXo3zuZ70qrGomWVEC27U/edit?usp=sharing
- https://github.com/alwentiu/COVIDSafe-CVE-2020-12856/blob/master/README.md
- https://covidsafe.watch/issue-register/cve-2020-12856-long-term-tracking-and-possibly-enables-other-bluetooth-based-attack-vectors
- https://docs.google.com/document/d/1u5a5ersKBH6eG362atALrzuXo3zuZ70qrGomWVEC27U/edit?usp=sharing
- https://github.com/alwentiu/COVIDSafe-CVE-2020-12856/blob/master/README.md
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