CVE-2020-27631

EUVD-2020-20138
In Oryx CycloneTCP 1.9.6, TCP ISNs are improperly random.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
9.8 CRITICAL
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 39%
Affected Products (NVD)
VendorProductVersion
oryx-embeddedcyclonetcp
1.9.6
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://www.cisa.gov/news-events/ics-advisories/icsa-21-042-01
https://www.forescout.com
https://www.forescout.com/resources/numberjack-weak-isn-generation-in-embedded-tcpip-stacks/
https://www.cisa.gov/news-events/ics-advisories/icsa-21-042-01
https://www.forescout.com
https://www.forescout.com/resources/numberjack-weak-isn-generation-in-embedded-tcpip-stacks/