{"id":"CVE-2004-1109","aliases":["EUVD-2004-1107","GHSA-vc3f-q7f5-f956"],"status":"published","title":"The FWDRV.SYS driver in Kerio Personal Firewall 4.1.1 and earlier allows remote attackers to...","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.","severity":{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-07","score":0.03236,"percentile":0.88355,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"published":"2004-12-01T05:00:00Z","modified":"2026-06-16T22:07:02Z","exploits":[{"source":"exploitdb","id":"EDB-626","title":"Kerio Personal Firewall 4.1.1 - Multiple IP Options Denial of Service Vulnerabilities","type":"dos","platform":"windows","date":"2004-11-12","verified":true,"url":"https://www.exploit-db.com/exploits/626"}],"products":[{"vendor":"kerio","product":"personal_firewall"}],"references":[{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/17992","tags":["vdb-entry","x_refsource_XF","x_transferred"]},{"url":"http://www.kerio.com/security_advisory.html","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory"]},{"url":"http://www.securityfocus.com/bid/11639","tags":["vdb-entry","x_refsource_BID","x_transferred","Exploit","Patch","Vendor Advisory"]},{"url":"http://www.eeye.com/html/research/advisories/AD20041109.html","tags":["third-party-advisory","x_refsource_EEYE","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2004-1109"},{"url":"https://github.com/advisories/GHSA-vc3f-q7f5-f956"}],"sources":{"cve":[{"id":"CVE-2004-1109","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.","status":"published","published":"2004-12-01T05:00:00Z","modified":"2024-08-08T00:39:00.881Z","updated_at":"2026-11-02T14:34:54.063504Z"}],"euvd":[{"id":"EUVD-2004-1107","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.","status":"published","published":"2004-12-01T05:00:00Z","modified":"2024-08-08T00:39:00Z","updated_at":"2026-11-03T01:15:16.148157Z"}],"ghsa":[{"id":"GHSA-vc3f-q7f5-f956","title":"The FWDRV.SYS driver in Kerio Personal Firewall 4.1.1 and earlier allows remote attackers to...","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.","status":"published","published":"2022-04-29T02:58:57Z","modified":"2023-01-30T05:03:21Z","updated_at":"2026-11-02T14:46:49.034004Z"}],"nvd":[{"id":"CVE-2004-1109","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.","status":"published","published":"2005-01-10T05:00:00Z","modified":"2026-06-16T22:07:02.397Z","cvss":[{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"updated_at":"2026-11-02T14:00:53.133049Z"}]}}