What’s Vulnerable › Vulnerabilities

CVE-2004-1109

• Severity: medium (CVSS 5.0 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 3.2% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2005-01-10 · updated 2026-06-16

Description

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.

Affected products

• Kerio Personal Firewall: 4.0.6, 4.0.7, 4.0.8, 4.0.9, 4.0.10, 4.0.16 (+2)

References

• http://www.eeye.com/html/research/advisories/AD20041109.html
• http://www.kerio.com/security_advisory.html
• http://www.securityfocus.com/bid/11639
• https://exchange.xforce.ibmcloud.com/vulnerabilities/17992
• http://www.eeye.com/html/research/advisories/AD20041109.html
• http://www.kerio.com/security_advisory.html
• http://www.securityfocus.com/bid/11639
• https://exchange.xforce.ibmcloud.com/vulnerabilities/17992

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