VULNERABILITY INTELLIGENCE

CVE-2021-40855

CVSS score9.8 CRITICAL

EPSS probability0.66%

CISA KEVNot currently listed

Published2022-01-21

Last modified2026-06-17

CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Description

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.

Weakness classification

nvd@nist.gov: CWE-295

Primary references

cve@mitre.org — Third Party Advisory
cve@mitre.org — Product, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108 — Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 — Product, Vendor Advisory