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BeyondTrust Research Discovers that 81 Percent of Critical Microsoft Vulnerabilities Mitigated by Removing Admin Rights

April 2019 by Morey Haber, Chief Technology Officer & Chief Information Security Officer at BeyondTrust

BeyondTrust has announced the release of its Microsoft Vulnerabilities Report. The research provides the latest insight into security vulnerabilities facing organizations today, as well as a five-year trends analysis to better equip organizations to increase their IT security posture and keep networks and systems safe.

This year’s report identified the following highlights:

• 700 Microsoft vulnerabilities were reported in 2018, representing a 110 percent increase in the overall number of reported vulnerabilities over 6 years (2013-2018).
• The number of vulnerabilities ranked as “Critical” by Microsoft are up 29 percent over 6 years (2013-2018).
• Remote Code Execution (RCE) vulnerabilities account for the largest proportion of total Microsoft vulnerabilities through 2018, with 292 RCE vulnerabilities reported, and 178 considered Critical (61 percent).
• In 2018, 499 vulnerabilities were reported across Windows Vista, Windows 7, Windows RT, Windows 8/8.1, and Windows 10 operating systems, 169 considered Critical (34 percent).
• Despite being the newest browser, Microsoft’s Edge browser has nearly triple the number of Critical vulnerabilities reported (112), compared to Internet Explorer (39). Critical vulnerabilities in Microsoft Edge have increased six-fold since its inception two years ago.
• Vulnerabilities in Microsoft Office continue to rise year-over-year, with a 121 percent increase over 6 years (2013-2018).
• Windows Server Vulnerabilities represent a significant percentage of the total number of vulnerabilities reported, reporting 449 in 2018, 136 of those Critical (30 percent).

Further analysis indicates that, over the last five years, nearly 88 percent of all Critical vulnerabilities published by Microsoft could have been mitigated by security teams removing admin rights from users.

“The Microsoft Vulnerabilities Report 2019 supports the importance of least privilege models, proving that reducing the number of admin users is a necessary step in the foundation of your security strategy," said Dr Jessica Barker, Co-CEO of Cygenta and Chair of ClubCISO.

“The rate at which vulnerabilities are increasing is a significant concern for organizations committed to protecting their networks from data breaches,” said Morey Haber, Chief Technology Officer & Chief Information Security Officer at BeyondTrust. “While organizations need to continue to focus on the security basics, the ability to remove admin rights and control applications is no longer difficult to achieve, and least privilege should be considered as part of a proactive security strategy.”




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