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 vulnerability allows remote attackers to obtain sensitive application (data of connected clients).
History

Fri, 20 Jun 2025 20:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-303
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 22 Nov 2024 12:00:00 +0000

Type Values Removed Values Added
References

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2024-01-24T00:00:00.000Z

Updated: 2025-06-20T19:19:37.327Z

Reserved: 2021-10-11T00:00:00.000Z

Link: CVE-2021-42146

cve-icon Vulnrichment

Updated: 2024-08-04T03:30:37.713Z

cve-icon NVD

Status : Modified

Published: 2024-01-24T19:15:08.483

Modified: 2025-06-20T20:15:23.110

Link: CVE-2021-42146

cve-icon Redhat

No data.