CVE-2021-3798: Opencryptoki Project Opencryptoki

Medium severity, CVSS 5.5. EPSS: 0.3% chance of exploitation in the next 30 days.

A flaw was found in openCryptoki. The openCryptoki Soft token does not check if an EC key is valid when an EC key is created via C_CreateObject, nor when C_DeriveKey is used with ECDH public data. This may allow a malicious user to extract the private key by performing an invalid curve attack.

Affected products

• Opencryptoki Project Opencryptoki: before 3.17.0 (fixed in 3.17.0)

Published 2022-08-23. Last modified 2026-06-17.