Opera XML Parser Remote Denial of Service Vulnerability
Opera is prone to a remote denial-of-service vulnerability.
Attackers can exploit this issue to cause the affected browser to crash, effectively denying service. Arbitrary code execution is not considered possible.
Opera 9.64 is vulnerable; other versions may also be affected.
UPDATE (April 3, 2009): This issue was previously documented as a remote buffer-overflow issue, but further analysis reveals that code execution is likely not possible; successful exploits will only crash the browser.