CVE 2007-3456

Integer overflow in Adobe Flash Player 9.0.45.0 and earlier might allow remote attackers to execute arbitrary code via a large length value for a (1) Long string or (2) XML variable type in a crafted (a) FLV or (b) SWF file, related to an "input validation error," including a signed comparison of values that are assumed to be non-negative.

See the CVE page on Mitre.org for more details.