What is CVE-2020-12858?

CVE-2020-12858 is a high-severity vulnerability in Health Covidsafe, classified under Use of Insufficiently Random Values. CVSS score: 7.5/10. Published 2020-05-18.

How severe is CVE-2020-12858?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Health Covidsafe

CVE-2020-12858

Non-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 devices running COVIDSafe by scanning for their advertising beacons.

Published 2020-05-18 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.018 (77.7th percentile), scored 2026-10-01.

Low probability of exploitation in the next 30 days, but still tracked. 78th percentile — 77.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.018 · newest: 0.018 · change: 0.000

Affected products

Health Covidsafe

Weakness classification (CWE)

CWE-330 — Use of Insufficiently Random Values

References

www.health.gov.au/resources/apps-and-tools/covidsafe-app (Product, Vendor Advisory)
docs.google.com/document/d/1u5a5ersKBH6eG362atALrzuXo3zuZ70qrGomWVEC27U/edit (Third Party Advisory)

Frequently asked questions

What is CVE-2020-12858?: CVE-2020-12858 is a high-severity vulnerability in Health Covidsafe, classified under Use of Insufficiently Random Values. CVSS score: 7.5/10. Published 2020-05-18.
How severe is CVE-2020-12858?: High severity. CVSS v3 base score is 7.5 out of 10.