{"id":"CVE-2003-1491","aliases":["EUVD-2003-1481","GHSA-2cwh-mxjx-crhg"],"status":"published","title":"Kerio Personal Firewall (KPF) 2.1.4 has a default rule to accept incoming packets from DNS (UDP...","description":"Kerio Personal Firewall (KPF) 2.1.4 has a default rule to accept incoming packets from DNS (UDP port 53), which allows remote attackers to bypass the firewall filters via packets with a source port of 53.","severity":{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-07","score":0.0237,"percentile":0.8392,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-16","CWE-94"],"published":"2003-12-31T05:00:00Z","modified":"2026-06-16T22:04:32Z","products":[{"vendor":"kerio","product":"personal_firewall"}],"references":[{"url":"http://www.securityfocus.com/bid/7436","tags":["vdb-entry","x_refsource_BID","x_transferred"]},{"url":"http://archives.neohapsis.com/archives/fulldisclosure/2003-q2/0352.html","tags":["mailing-list","x_refsource_FULLDISC","x_transferred"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/11880","tags":["vdb-entry","x_refsource_XF","x_transferred"]},{"url":"http://www.securiteam.com/securitynews/5FP0N1P9PI.html","tags":["x_refsource_MISC","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2003-1491"},{"url":"https://github.com/advisories/GHSA-2cwh-mxjx-crhg"}],"sources":{"cve":[{"id":"CVE-2003-1491","description":"Kerio Personal Firewall (KPF) 2.1.4 has a default rule to accept incoming packets from DNS (UDP port 53), which allows remote attackers to bypass the firewall filters via packets with a source port of 53.","status":"published","published":"2007-10-24T23:00:00Z","modified":"2024-08-08T02:28:03.736Z","updated_at":"2026-11-02T14:20:16.411288Z"}],"euvd":[{"id":"EUVD-2003-1481","description":"Kerio Personal Firewall (KPF) 2.1.4 has a default rule to accept incoming packets from DNS (UDP port 53), which allows remote attackers to bypass the firewall filters via packets with a source port of 53.","status":"published","published":"2007-10-24T23:00:00Z","modified":"2024-08-08T02:28:03Z","updated_at":"2026-11-03T01:15:02.977959Z"}],"ghsa":[{"id":"GHSA-2cwh-mxjx-crhg","title":"Kerio Personal Firewall (KPF) 2.1.4 has a default rule to accept incoming packets from DNS (UDP...","description":"Kerio Personal Firewall (KPF) 2.1.4 has a default rule to accept incoming packets from DNS (UDP port 53), which allows remote attackers to bypass the firewall filters via packets with a source port of 53.","status":"published","published":"2022-04-29T01:28:10Z","modified":"2023-01-30T05:02:20Z","cwes":["CWE-94"],"updated_at":"2026-11-02T14:46:37.149934Z"}],"nvd":[{"id":"CVE-2003-1491","description":"Kerio Personal Firewall (KPF) 2.1.4 has a default rule to accept incoming packets from DNS (UDP port 53), which allows remote attackers to bypass the firewall filters via packets with a source port of 53.","status":"published","published":"2003-12-31T05:00:00Z","modified":"2026-06-16T22:04:32.03Z","cvss":[{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"cwes":["CWE-16","CWE-94"],"updated_at":"2026-11-02T14:00:48.212104Z"}]}}