CVE-2001-0402

Name: CVE-2001-0402
Creator: NVD / NIST
Published: 2001-06-18T04:00:00+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 2.44%

Last modified Jun 16, 2026

CVE-2001-0402 is a vulnerability of currently unknown severity. IPFilter 3.4.16 and earlier does not include sufficient session information in its cache, which allows remote attackers to bypass access restrictions by sending fragmented packets to a restricted port after sending unfragmented packets to an unrestricted port.. EPSS estimates a 2.44% chance of exploitation in the next 30 days.

Description

IPFilter 3.4.16 and earlier does not include sufficient session information in its cache, which allows remote attackers to bypass access restrictions by sending fragmented packets to a restricted port after sending unfragmented packets to an unrestricted port.

Metrics

EPSS Probability

2.44%

82.3th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Darren Reed	Ipfilter	<= 3.4.16
Freebsd	Freebsd	<= 4.1
Openbsd	Openbsd	2.8

References

Timeline

Published: Jun 18, 2001
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2001-0402?

How severe is CVE-2001-0402?

Severity scoring for CVE-2001-0402 is pending analysis. The EPSS model estimates a 2.44% probability of exploitation in the next 30 days.

How do I fix CVE-2001-0402?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2001-0402?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST