CVE-2001-0402
IPFilter 3.4.16 and earlier does not include sufficient session information in its cache, which...
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.
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2001-0402- CVSS 2.0
- 7.5 High
AV:N/AC:L/Au:N/C:P/I:P/A:P - Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2001-0402- Updated
- 2026-11-02
EUVDEUVD-2001-0399 No score
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.
- Record
EUVD-2001-0399- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-vp6g-4h84-xm52 No score
IPFilter 3.4.16 and earlier does not include sufficient session information in its cache, which...
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.
- Record
GHSA-vp6g-4h84-xm52- Updated
- 2026-11-02
Affected products
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| Exploit-DB | IPFilter 3.x - Fragment Rule Bypass | 2001-04-09 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, Exploit-DB, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2001-0402 is a high vulnerability (CVSS 7.5) in Darren Reed Ipfilter, published June 18, 2001. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 2.44%, the 84th percentile. No source names a fixed version.