CVE-2021-42146
HIGHContiki-ng Tinydtls - Improper Exception Handling
Title source: ruleDescription
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).
Scores
CVSS v3
7.5
EPSS
0.0009
EPSS Percentile
24.8%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Classification
CWE
CWE-755
CWE-303
Status
published
Affected Products (1)
contiki-ng/tinydtls
Timeline
Published
Jan 24, 2024
Tracked Since
Feb 18, 2026