The Window Image Acquisition (WIA) Service in Microsoft Windows XP SP2 allows local users to gain privileges via unspecified vectors involving an "unchecked buffer," probably a buffer overflow.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A186
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2007/ms07-007
http://www.vupen.com/english/advisories/2007/0576
http://www.us-cert.gov/cas/techalerts/TA07-044A.html
http://www.securitytracker.com/id?1017634