Security experts from UK company Computer Terrorism have released a proof-of-concept exploit for a security flaw in Microsoft's Internet Explorer that could allow an attacker to take control of a system.
The vulnerability was first reported on 31 May 2005 but was initially believed to be 'merely' a denial of service flaw that could crash a system.
The proof-of-concept code that Computer Terrorism showed elevated the threat level of the vulnerability because it now allows arbitrary code to be executed.
The new concept demonstrates how the calculator application was launched when a user visits a website (see test link below).
- The Internet Explorer vulnerability can be tested here.
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