What is CVE-2021-42146?

CVE-2021-42146 is a high-severity vulnerability in Contiki-ng Tinydtls, classified under Improper Handling of Exceptional Conditions. CVSS score: 7.5/10. Published 2024-01-24.

How severe is CVE-2021-42146?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Contiki-ng Tinydtls

CVE-2021-42146

An issue was discovered in Contiki-NG tinyDTLS through master branch 53a0d97. DTLS servers allow remote attackers to reuse the same epoch number within two times the TCP maximum segment lifetime, which is prohibited in RFC6347. This vulner…

EPSS: 0.007 (47.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

Affected products

Contiki-ng Tinydtls — versions 2018-08-30
N/a — versions n/a

Weakness classification (CWE)

CWE-755 — Improper Handling of Exceptional Conditions
CWE-303 — Incorrect Implementation of Authentication Algorithm

References

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

Frequently asked questions

What is CVE-2021-42146?: CVE-2021-42146 is a high-severity vulnerability in Contiki-ng Tinydtls, classified under Improper Handling of Exceptional Conditions. CVSS score: 7.5/10. Published 2024-01-24.
How severe is CVE-2021-42146?: High severity. CVSS v3 base score is 7.5 out of 10.