{"cve":"CVE-2004-1109","nvd":{"published":"2005-01-10T05:00:00.000","modified":"2026-06-16T22:07:02.397","status":"Modified","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.","cvss_v4":null,"cvss_v3":null,"cwes":[],"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"],"products":["kerio:personal_firewall"],"source":"nvd","synced_at":"2026-10-19T19:38:22.000386253+00:00"},"epss":{"cve":"CVE-2004-1109","score":0.03236,"percentile":0.8828,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}