CVE-2020-27222

HighCVSS 7.5/10Last modified Jun 17, 2026

Description

In Eclipse Californium version 2.3.0 to 2.6.0, the certificate based (x509 and RPK) DTLS handshakes accidentally fails, because the DTLS server side sticks to a wrong internal state. That wrong internal state is set by a previous certificate based DTLS handshake failure with TLS parameter mismatch. The DTLS server side must be restarted to recover this. This allow clients to force a DoS.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-372

Affected software

No affected versions have been published.

Timeline

Published
Feb 3, 2021
Last modified
Jun 17, 2026
NVD status
Modified

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CVE-2020-27222: High severity, CVSS 7.5 | Vulnix