Opera before 10.01 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via a crafted domain name.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6574
https://exchange.xforce.ibmcloud.com/vulnerabilities/54020
https://euvd.enisa.europa.eu/vulnerability/EUVD-2009-3802
http://www.vupen.com/english/advisories/2009/3073
http://www.securityfocus.com/bid/36850
http://www.opera.com/support/kb/view/938/
http://www.opera.com/docs/changelogs/windows/1001/
http://www.opera.com/docs/changelogs/unix/1001/