In this Patch Tuesday Microsoft released Five bulletins addressing a total of 23 vulnerabilities.
Two are rated as Critical (addressing 19 vulnerabilities) and three are rated as Important.
Critical security updates address security issues in Internet Explorer 6 to Internet Explorer 11 and Microsoft DirectShow. Both of them potentially allow Remote Code Execution.
The other three security updates address issues in Windows Kernel-Mode Driver, Security Account Manager Remote (SAMR) Protocol, and Microsoft Silverlight.
Microsoft Internet Explorer Zero-day CVE-2014-0322 which was exploited in the wild is also patched in MS14-012 bulletin. Apple Mac users with Silverlight 5 installed should apply the patch from MS14-014 bulletin
Microsoft security bulletin summary for March 2014 in order of severity.
MS14-012: Cumulative Security Update for Internet Explorer (2925418)
Severity Rating: Critical
Affected Software: Microsoft Windows, Internet Explorer
Vulnerability Impact: Remote Code Execution
MS14-013: Vulnerability in Microsoft DirectShow Could Allow Remote Code Execution (2929961)
Severity Rating: Critical
Affected Software: Microsoft Windows
Vulnerability Impact: Remote Code Execution
MS14-015: Vulnerabilities in Windows Kernel-Mode Driver Could Allow Elevation of Privilege (2930275)
Severity Rating: Important
Affected Software: Microsoft Windows
Vulnerability Impact: Elevation of Privilege
MS14-016: Vulnerability in Security Account Manager Remote (SAMR) Protocol Could Allow Security Feature Bypass (2934418)
Severity Rating: Important
Affected Software: Microsoft Windows
Vulnerability Impact: Security Feature Bypass
MS14-014: Vulnerability in Silverlight Could Allow Security Feature Bypass (2932677)
Severity Rating: Important
Affected Software: Microsoft Silverlight
Vulnerability Impact: Security Feature Bypass
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– Veerendra GG