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High severity7.5NVD Advisory· Published Feb 3, 2021· Updated Jun 17, 2026

CVE-2020-27222

CVE-2020-27222

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.

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LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

3
  • Eclipse/Californium3 versions
    cpe:2.3:a:eclipse:californium:*:*:*:*:*:*:*:*+ 2 more
    • cpe:2.3:a:eclipse:californium:*:*:*:*:*:*:*:*range: >=2.3.0,<=2.6.0
    • (no CPE)range: 2.3.0 - 2.6.0
    • (no CPE)range: [2.3.0, 2.6.0]

Patches

Vulnerability mechanics

References

1

News mentions

0

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