Microsoft has released a package of nine security updates, which include five bulletins rated by the company as "critical".
The company said that the critical updates, which are considered to be top deployment priorities by the company, address flaws which, if exploited, could allow an attacker to remotely execute code on a targeted system.
The vulnerabilities patched in the update include flaws in Remote Desktop, Exchange Server and Windows Common Controls. Other updates include a cumulative update for Internet Explorer and a patch to fix remote code execution vulnerabilities in Windows networking components.
Paul Henry, a security analyst with Lumension, said that one of the patches, MS12-60, should be a top deployment priority because it addresses a flaw that poses a critical risk in all supported versions of Windows.
"It affects all platforms of Windows and addresses an ActiveX component that's redistributed in many places in Windows," Henry explained.
"It's an issue that was previously patched and this month's patch cleans up the previous one."
In addition to the five critical fixes, Microsoft also released an update to address four vulnerabilities rated by the company as "important" security risks.
The company said that three of the bulletins would address remote code execution flaws, while a fourth would patch vulnerabilities that could allow an attacker to trigger a denial-of-service error.
Microsoft is advising administrators to test and install the update as soon as possible.
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