CVE-2006-3787

kpf4ss.exe in Sunbelt Kerio Personal Firewall 4.3.x before 4.3.268 does not properly hook the...

2.1 LowPublic exploit

kpf4ss.exe in Sunbelt Kerio Personal Firewall 4.3.x before 4.3.268 does not properly hook the CreateRemoteThread API function, which allows local users to cause a denial of service (crash) and bypass protection mechanisms by calling CreateRemoteThread.

Exploit likelihood

0.71%Down 1.2 points since Feb 4, 2022

What each source reports

NVD Score used 2.1

Record: CVE-2006-3787
CVSS 2.0: 2.1 LowAV:L/AC:L/Au:N/C:N/I:N/A:P
Updated: 2026-11-02

CVE List No score

Record: CVE-2006-3787
Updated: 2026-11-02

EUVDEUVD-2006-3781 No score

Record: EUVD-2006-3781
Updated: 2026-11-03

GitHub AdvisoriesGHSA-fj3f-9pm8-f5pp No score

kpf4ss.exe in Sunbelt Kerio Personal Firewall 4.3.x before 4.3.268 does not properly hook the...

Record: GHSA-fj3f-9pm8-f5pp
Updated: 2026-11-02

Affected products

kerio personal firewall

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
Source	Link	Date
Exploit-DB	Sunbelt Kerio Personal Firewall 4.3.426 - CreateRemoteThread Denial of Service	2006-07-15

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, Exploit-DB, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2006-3787 is a low vulnerability (CVSS 2.1) in Kerio Personal Firewall, published July 21, 2006. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 0.71%, the 53rd percentile. No source names a fixed version.