What is CVE-2021-42141?

CVE-2021-42141 is a critical-severity vulnerability in Contiki-ng Tinydtls, classified under Improper Handling of Exceptional Conditions. CVSS score: 9.8/10. Published 2024-01-22.

How severe is CVE-2021-42141?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Vulnerability in Contiki-ng Tinydtls

CVE-2021-42141

An issue was discovered in Contiki-NG tinyDTLS through 2018-08-30. One incorrect handshake could complete with different epoch numbers in the packets Client_Hello, Client_key_exchange, and Change_cipher_spec, which may cause denial of serv…

EPSS: 0.012 (63.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Contiki-ng Tinydtls
N/a — versions n/a

Weakness classification (CWE)

CWE-755 — Improper Handling of Exceptional Conditions

References

cve@mitre.org (Patch)
cve@mitre.org (VDB Entry, Third Party Advisory)
cve@mitre.org (Mailing List, Third Party Advisory)
af854a3a-2127-422b-91ae-364da2661108

Frequently asked questions

What is CVE-2021-42141?: CVE-2021-42141 is a critical-severity vulnerability in Contiki-ng Tinydtls, classified under Improper Handling of Exceptional Conditions. CVSS score: 9.8/10. Published 2024-01-22.
How severe is CVE-2021-42141?: Critical severity. CVSS v3 base score is 9.8 out of 10.