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CVE-2004-1109

MediumPublished

The FWDRV.SYS driver in Kerio Personal Firewall 4.1.1 and earlier allows remote attackers to cause a denial of service (CPU consumption and system freeze...

Published: Dec 1, 2004
Updated: Aug 8, 2024
Assigning CNA: mitre
Evidence observed: Nov 12, 2004

Primary CVSS

5.0/ 10Medium

nvd · CVSS 2.0

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

EPSS probability estimate

3.2%

Low · next 30 days

Percentile: 87.7%
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

The FWDRV.SYS driver in Kerio Personal Firewall 4.1.1 and earlier allows remote attackers to cause a denial of service (CPU consumption and system freeze from infinite loop) via a (1) TCP, (2) UDP, or (3) ICMP packet with a zero length IP Option field.

Sources

Kerio Personal Firewall 4.1.1 - Multiple IP Options Denial of Service VulnerabilitiesExploit
houseofdabus · windows · Nov 12, 2004

Responsible use

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