This security advisory describes one critical risk vulnerability.
CWE-416 - Use After Free
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to use-after-free error in the Peer Objects component within iepeers.dll library. A remote attacker can create a specially crafted web page, trick the victim into visiting it and execute arbitrary code via vectors involving access to an invalid pointer after the deletion of an object.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Note: this vulnerability is being actively exploited.
Install update from vendor's website.Vulnerable software versions
Microsoft Internet Explorer: 5.01, 6, 7CPE
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
How the attacker can exploit this vulnerability?
The attacker would have to trick the victim to visit a specially crafted website.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability. However, a fully functional exploit for this vulnerability is available.