avast! CAB File Processing Buffer Overflow Vulnerability - Advisories - Secunia

Avast!にCABファイルを処理する上でヒープオーバーフローが発生する脆弱性が存在するそうです。

The vulnerability is caused due to an error within the parsing of .CAB files and can be exploited to cause a heap-based buffer overflow via a specially crafted .CAB file.
Successful exploitation may allow execution of arbitrary code.
The vulnerability reportedly affects versions prior to 4.7.766 for servers and 4.7.700 for the Managed Client product.