What is CVE-2021-42142?

CVE-2021-42142 is a critical-severity vulnerability in Contiki-ng Tinydtls, classified under Improper Handling of Exceptional Conditions. CVSS score: 9.8/10. Published 2024-01-23.

How severe is CVE-2021-42142?

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

Resource exhaustion in Contiki-ng Tinydtls

CVE-2021-42142

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 d…

EPSS: 0.010 (58.1th 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)

References

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

Frequently asked questions

What is CVE-2021-42142?: CVE-2021-42142 is a critical-severity vulnerability in Contiki-ng Tinydtls, classified under Improper Handling of Exceptional Conditions. CVSS score: 9.8/10. Published 2024-01-23.
How severe is CVE-2021-42142?: Critical severity. CVSS v3 base score is 9.8 out of 10.