Cacti 0.8.7e and earlier allows remote authenticated administrators to gain privileges by modifying the "Data Input Method" for the "Linux - Get Memory Usage" setting to contain arbitrary commands.
https://exchange.xforce.ibmcloud.com/vulnerabilities/54473
http://www.securityfocus.com/archive/1/508129/100/0/threaded
http://www.openwall.com/lists/oss-security/2009/11/30/2
http://www.openwall.com/lists/oss-security/2009/11/26/1
http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00048.html
http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00042.html
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00005.html
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00001.html