CVE-2021-42144: Contiki-NG Tinydtls

Critical severity, CVSS 9.8. EPSS: 0.7% chance of exploitation in the next 30 days.

Buffer over-read vulnerability in Contiki-NG tinyDTLS through master branch 53a0d97 allows attackers obtain sensitive information via crafted input to dtls_ccm_decrypt_message().

Affected products

• Contiki-NG Contiki-NG Tinydtls: up to and including 2018-08-30

Published 2024-01-24. Last modified 2026-06-17.