IT security firm, Sophos, is warning computer users of malware that is exploiting a critical security vulnerability in Microsoft software, and urging companies to roll-out security patches as a matter of priority.

The Cuebot-L and Cuebot-M worms spread via AOL instant messenger, exploiting the vulnerability described in Microsoft's MS06-040 security bulletin. Once the worms have infected a PC, they turn off the Windows firewall and open a backdoor, allowing remote hackers to gain access and control over the computer.

Sophos advises customers to patch against the latest security vulnerabilities in Microsoft's software last week. Home users of Microsoft Windows can visit update.microsoft.com to have their systems scanned for critical Microsoft security vulnerabilities.

Sophos suggests that every IT manager responsible for security should consider subscribing to vulnerability mailing lists such as that operated by Microsoft (link below).

Related links: (Open in a new window.)
update.microsoft.com
www.microsoft.com/technet/security/bulletin/notify.mspx

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