CVE-2020-27631

CRITICALImmediate

Published:Oct 10, 2023(2 years ago)

Modified:Nov 21, 2024

Remote ExploitNo Auth RequiredNo InteractionLow Complexity

Vulnerability Description

In Oryx CycloneTCP 1.9.6, TCP ISNs are improperly random.

Attack Characteristics

Network AccessLow ComplexityNo Auth NeededNo User Interaction

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AI analysis not yet available

Plain-English explanation, risk summary, and remediation steps will appear here once AI analysis is complete.

No Fix Known

No patch has been released yet. Apply workarounds or mitigations where available.

Affected Software

Vendor	Product	Versions	Fixed In
oryx-embedded	cyclonetcp	-	-

Timeline

Published
CVE disclosed publicly
Oct 10, 20232 years ago
Last Modified
Most recent update
Nov 21, 20241 year ago
Indexed to CVEInsight
Added to this platform
Mar 29, 20262 months ago

References

https://www.cisa.gov/news-events/ics-advisories/icsa-21-042-01Third Party Advisory
https://www.forescout.comThird Party Advisory
https://www.forescout.com/resources/numberjack-weak-isn-generation-in-...Third Party Advisory

CVSS Score

v3.1

9.8/ 10.0

CRITICAL

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

At a Glance

Affected Products

References

oryx-embedded / cyclonetcp

CVE-2020-27631

Vulnerability Description

Attack Characteristics

Affected Software

Timeline

References

CVSS Score

At a Glance

Official Sources

CVSS v3 Vector

Impact Analysis

CVE-2020-27631

✦ Vulnerability Description

Attack Characteristics

Affected Software

Timeline

References

CVSS Score

At a Glance

Official Sources

CVSS v3 Vector

Impact Analysis

Vulnerability Description