What is CVE-2020-12856?

CVE-2020-12856 is a critical-severity vulnerability in Alberta Abtracetogether. CVSS score: 9.8/10. Published 2020-05-18.

How severe is CVE-2020-12856?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2020-12856 known to be exploited?

12 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Alberta Abtracetogether

CVE-2020-12856

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.

EPSS: 0.051 (91.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Public proof-of-concept exploits

References

cve@mitre.org (Third Party Advisory, x_refsource_MISC)
cve@mitre.org (Third Party Advisory, x_refsource_MISC)
cve@mitre.org (Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2020-12856?: CVE-2020-12856 is a critical-severity vulnerability in Alberta Abtracetogether. CVSS score: 9.8/10. Published 2020-05-18.
How severe is CVE-2020-12856?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2020-12856 known to be exploited?: 12 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.