Multiple buffer overflows in Firebird 1.5, one of which affects WNET, have unknown impact and attack vectors. NOTE: this issue might overlap CVE-2006-1240.
https://euvd.enisa.europa.eu/vulnerability/EUVD-2006-7191
http://www.securityfocus.com/bid/28474
http://www.firebirdsql.org/rlsnotes/Firebird-2.0-ReleaseNotes.pdf