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CVE-2001-0328

MediumPublished

TCP implementations that use random increments for initial sequence numbers (ISN) can allow remote attackers to perform session hijacking or disruption by...

Published: May 24, 2001
Updated: Aug 8, 2024
Assigning CNA: mitre
Evidence observed: Sep 27, 1999

Primary CVSS

5.0/ 10Medium

nvd · CVSS 2.0

AV:N/AC:L/Au:N/C:N/I:N/A:P

EPSS probability estimate

18.1%

Moderate · next 30 days

Percentile: 97.1%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

TCP implementations that use random increments for initial sequence numbers (ISN) can allow remote attackers to perform session hijacking or disruption by injecting a flood of packets with a range of ISN values, one of which may match the expected ISN.

Sources

Linux Kernel 2.2 - Predictable TCP Initial Sequence NumberExploit
Stealth & S. Krahmer · linux · Sep 27, 1999

Responsible use

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