CVE-2001-0328

CVE-2001-0328 is a medium-severity vulnerability with a CVSS 2.0 base score of 5.0. Its EPSS exploit-prediction score of 18% places it in the 97th percentile, indicating an elevated likelihood of exploitation.

Key facts

Description

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.

Frequently asked questions

What is CVE-2001-0328?
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.
How severe is CVE-2001-0328?
CVE-2001-0328 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2001-0328 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 18% (97th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2001-0328?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2001-0328 published?
CVE-2001-0328 was published on 2001-06-27 and last updated on 2026-06-16.

References