Vulnerability in Europa Technical Specifications For Digital Covid Certificates
CVE-2021-40855
The EU Technical Specifications for Digital COVID Certificates before 1.1 mishandle certificate governance. A non-production public key certificate could have been used in production.
Vulnerability class: Improper Certificate Validation
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.007 (49.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 50th percentile — 49.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000
Affected products
Weakness classification (CWE)
References
- www.consilium.europa.eu/en/policies/coronavirus/eu-digital-covid-certificate/ (Product, Vendor Advisory)
- github.com/eu-digital-green-certificates/dgc-overview/security/advisories/GHSA-… (Third Party Advisory)
Frequently asked questions
- What is CVE-2021-40855?
- CVE-2021-40855 is a critical-severity vulnerability in Europa Technical Specifications For Digital Covid Certificates, classified under Improper Certificate Validation. CVSS score: 9.8/10. Published 2022-01-21.
- How severe is CVE-2021-40855?
- Critical severity. CVSS v3 base score is 9.8 out of 10.