CVE-2021-42142

CriticalCVSS 9.8/10Last modified Jun 17, 2026

Description

An issue was discovered in Contiki-NG tinyDTLS through master branch 53a0d97. DTLS servers mishandle the early use of a large epoch number. This vulnerability allows remote attackers to cause a denial of service and false-positive packet drops.

Metrics

CVSS 3.1 9.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-755 CWE-770

Affected software

No affected versions have been published.

Timeline

Published: Jan 23, 2024
Last modified: Jun 17, 2026
NVD status: Modified

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