CVE-2020-27635

critical

Description

In PicoTCP 1.7.0, TCP ISNs are improperly random.

References

https://www.tenable.com/cyber-exposure/2021-threat-landscape-retrospective

https://www.tenable.com/blog/numberjack-nine-vulnerabilities-across-multiple-open-source-tcpip-stacks

https://www.forescout.com/resources/numberjack-weak-isn-generation-in-embedded-tcpip-stacks/

https://www.forescout.com

https://www.cisa.gov/news-events/ics-advisories/icsa-21-042-01

Details

Source: Mitre, NVD

Published: 2023-10-10

Updated: 2023-10-13

Risk Information

CVSS v2

Base Score: 9.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:N

Severity: High

CVSS v3

Base Score: 9.1

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Severity: Critical