CVE-2020-27634

CRITICAL

Contiki 4.5 - Use of Insufficiently Random Values in TCP ISN Generation

Title source: llm
STIX 2.1

Description

In Contiki 4.5, TCP ISNs are improperly random.

References (3)

Core 3

Scores

CVSS v3 9.1
EPSS 0.0172
EPSS Percentile 74.4%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact total

Details

CWE
CWE-330
Status published
Products (1)
contiki-ng/contiki-ng 4.5
Published Oct 10, 2023
Tracked Since Feb 18, 2026