cve.bz

CVE-2021-42142

9.8 criticalEPSS 1.0%

Critical (9.8) in contiki-ng tinydtls. EPSS 1.0% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

9.8 critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
1.0% chance of exploitation in the next 30 days; higher than 62% of CVEs (scores of 2026-10-31)
CWEs
CWE-755, CWE-770
Published
Modified
Record from
the NVD, synced

Affected

References

Check your stackJSON