Format string vulnerability in wrapper.c in CVS 1.12.x through 1.12.8, and 1.11.x through 1.11.16 allows remote attackers with CVSROOT commit access to cause a denial of service (application crash) and possibly execute arbitrary code via format string specifiers in a wrapper line.
https://exchange.xforce.ibmcloud.com/vulnerabilities/16365
http://www.securityfocus.com/bid/10499
http://security.e-matters.de/advisories/092004.html
http://lists.grok.org.uk/pipermail/full-disclosure/2004-June/022441.html