ZoneAlarm 2.1.10 and earlier does not filter UDP packets with a source port of 67, which allows remote attackers to bypass the firewall rules.
http://www.securityfocus.com/templates/archive.pike?list=1&msg=20000421044123.2353.qmail%40securityfocus.com
http://www.securityfocus.com/bid/1137
http://www.osvdb.org/1294
Source: Mitre, NVD
Published: 2000-04-24
Updated: 2023-11-07
Base Score: 7.5
Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P
Severity: High
Base Score: 9.1
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Severity: Critical