🛡️ CVE-2022-2576 — californium

🟠 CVSS 8.0 — High ⚠️ Exploit Public CWE-408 NVD
8.0
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Eclipse Californium denial of service (DoS) via Datagram Transport Layer Security (DTLS) handshake on parameter mismatch

In Eclipse Californium versions 2.0.0 to 2.7.2 and 3.0.0-3.5.0 a DTLS resumption handshake falls back to a DTLS full handshake on a parameter mismatch without using a HelloVerifyRequest. Especially, if used with certificate based cipher suites, that results in message amplification (DDoS other peers) and high CPU load (DoS own peer). The misbehavior occurs only with DTLS_VERIFY_PEERS_ON_RESUMPTION_THRESHOLD values larger than 0.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality none, integrity none, availability high.

Affected software

CVE-2022-2576 is recorded against 2 packages.

  • californium (from 3.0.0 up to 3.5.0)
  • org.eclipse.californium:californium-core (from 3.0.0 up to 3.6.0)

Timeline and source

Published on 29 July 2022 and last revised on 17 June 2026. A public exploit is known to exist, which raises the urgency of patching considerably. Record sourced from NVD.

References

bugs.eclipse.org
bugs.eclipse.org

Details

Severity HIGH
CVSS Score 8.0
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE CWE-408
Public Exploit ⚠️ Yes
Source NVD
Published 2022-07-29
Updated 2026-08-12
Modified 2026-06-17
Fix URL N/A

Affected Packages

Software From version Fixed in
californium 3.0.0 3.5.0
org.eclipse.californium:californium-core 3.0.0 3.6.0

References

Exploit, Issue Tracking, Vendor Advisory https://bugs.eclipse.org/580018
Exploit, Issue Tracking, Vendor Advisory https://bugs.eclipse.org/580018

Similar Threats

Exploit Protection

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