Multiple buffer overflows in Spamdyke before 4.3.0 might allow remote attackers to execute arbitrary code via vectors related to "serious errors in the usage of snprintf()/vsnprintf()" in which the return values may be larger than the size of the buffer.
http://www.spamdyke.org/documentation/Changelog.txt
http://www.securityfocus.com/bid/51440
http://www.openwall.com/lists/oss-security/2012/01/23/5
http://www.mail-archive.com/spamdyke-release%40spamdyke.org/msg00014.html
http://security.gentoo.org/glsa/glsa-201203-01.xml