Microsoft's newly released monthly security update includes fixes for critical flaws in Windows and Internet Explorer.
The company said February's 'Patch Tuesday' release will address a total of 21 security vulnerabilities in its products.
Among the bulletins are fixes for flaws in Internet Explorer and the Windows C Runtime component which the company has listed as 'critical' flaws and should top deployment priorities for administrators.
If exploited, both flaws could potentially allow an attacker to remotely execute code on a targeted system.
Jim Walter, manager of McAfee's threat intelligence service, recommended that administrators take heed of Microsoft's warnings and install the patches as soon as possible.
"The Internet Explorer bulletin should be considered a top priority, as there is a risk of code execution attacks," he said.
"If not attended to, browser exploits can be particularly harmful."
The company has also given 'critical' status to a pair of remote code execution vulnerabilities in Windows kernel drivers and the .Net Framework.
The company noted that while the vulnerabilities were publicly disclosed, no active attacks have been reported in the wild.
Each of the remaining five bulletins address flaws which the company has labeled as 'important' security risks. The patched components include Windows, Office and Microsoft Server tools.
Risks from the flaws include elevation of privilege and remote code execution.
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