VULNERABILITY INTELLIGENCE

CVE-2021-42146

CVSS score7.5 HIGH
EPSS probability0.66%
CISA KEVNot currently listed
Published2024-01-24
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Description

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).

Weakness classification

  • nvd@nist.gov: CWE-755
  • 134c704f-9b21-4f2e-91b3-4a467353bcc0: CWE-303

Primary references