Stack-based buffer overflow in mbse-bbs 0.70 and earlier allows local users to execute arbitrary code via a long string in the MBSE_ROOT environment variable.
https://www.exploit-db.com/exploits/3154
https://exchange.xforce.ibmcloud.com/vulnerabilities/31639
http://www.mbse.eu/mbse/mbsebbs/index.html
http://lists.grok.org.uk/pipermail/full-disclosure/2007-January/051859.html