What’s Vulnerable › Vulnerabilities

CVE-2020-12857

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-05-18 · updated 2026-06-17
• Weakness: CWE-459

Description

Caching 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 running COVIDSafe.

Affected products

• Health Covidsafe: before 1.0.17 — fixed in 1.0.17

How to fix

Upgrade to a fixed version: Health Covidsafe 1.0.17. Check the vendor advisory for mitigations.

References

• https://covidsafe.watch/issue-register/cve-2020-12857-tempid-identifier-was-static
• https://docs.google.com/document/d/1u5a5ersKBH6eG362atALrzuXo3zuZ70qrGomWVEC27U/edit?usp=sharing
• https://www.health.gov.au/resources/apps-and-tools/covidsafe-app
• https://covidsafe.watch/issue-register/cve-2020-12857-tempid-identifier-was-static
• https://docs.google.com/document/d/1u5a5ersKBH6eG362atALrzuXo3zuZ70qrGomWVEC27U/edit?usp=sharing
• https://www.health.gov.au/resources/apps-and-tools/covidsafe-app

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