Paper/Archive/CVE-2020-27631

CVE-2020-27631

mitre — In Oryx CycloneTCP 1.9.6, TCP ISNs are improperly random.

EPSS 1%CVSS 9.8

critical.is priorityof 100

42

CVSS 9.8 (NVD)9.8 / 10 × 3029.4 Not in CISA KEV+300.0 EPSS percentile 65.2.652 × 2013.0 No public exploit+100.0 SSVC exploitation: none+100.0

Description · from the CVE record

In Oryx CycloneTCP 1.9.6, TCP ISNs are improperly random.

Affected

ProductAffectedFixed inSource

n/an/a–CNA

Scores by source

NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: partial

References

refforescout.com refcisa.gov/news-events/ics-advisories/icsa-21-042-01 refforescout.com/resources/numberjack-weak-isn-generation-in-embedded-tcpip-stacks