Microsoft fixes critical flaws in Windows, IE, Edge, and Office

Patches for more than 40 flaws are covered in 16 security bulletins, six of which rated critical

Microsoft has fixed more than 40 vulnerabilities in its products Tuesday, including critical ones in Windows, Internet Explorer, Edge, and Office.

The vulnerabilities are covered in 16 security bulletins, six of which are marked as critical and the rest as important. This puts the total number of Microsoft security bulletins for the past six months to more than 160, a six-month record during the past decade.

Companies running Windows servers should prioritize a patch for a critical remote code execution vulnerability in the Microsoft DNS Server component, covered in the MS16-071 bulletin.

Attackers can exploit this vulnerability by sending specifically crafted DNS requests to a Windows Server 2012 or a Windows Server 2012 R2 deployment configured as a DNS server.

"The impact of this vulnerability is "extremely worrisome on such a mission critical service such as DNS," Wolfgang Kandek, CTO of security vendor Qualys, said in a blog post. "Organizations that run their DNS server on the same machine as their Active Directory server need to be doubly aware of the danger of this vulnerability."

The critical bulletins for Internet Explorer and Edge, namely MS16-063 and MS16-068, should also be high on the priority list because they cover remote code execution flaws that can be exploited by simply browsing to a specially crafted website.

Next on the list should be the Microsoft Office security bulletin, MS16-070, because the applications in the Office suite are a common target for attackers, particularly through malicious email attachments.

Kandek believes that the most important vulnerability in the Office bulletin is a remote code execution flaw tracked as CVE-2016-0025 that stems from the Microsoft Word RTF format.

"Since RTF can be used to attack through Outlook’s preview pane, the flaw can be triggered with a simple e-mail without user interaction," he said.

Even though 10 security bulletins are marked as Important, companies should evaluate them in the context of their particular environments. Some of them might turn out to be urgent to some assets.

Join the PC World newsletter!

Error: Please check your email address.

Tags MicrosoftWindows

Our Back to Business guide highlights the best products for you to boost your productivity at home, on the road, at the office, or in the classroom.

Keep up with the latest tech news, reviews and previews by subscribing to the Good Gear Guide newsletter.

Lucian Constantin

IDG News Service
Show Comments

Most Popular Reviews

Latest News Articles

Resources

PCW Evaluation Team

Azadeh Williams

HP OfficeJet Pro 8730

A smarter way to print for busy small business owners, combining speedy printing with scanning and copying, making it easier to produce high quality documents and images at a touch of a button.

Andrew Grant

HP OfficeJet Pro 8730

I've had a multifunction printer in the office going on 10 years now. It was a neat bit of kit back in the day -- print, copy, scan, fax -- when printing over WiFi felt a bit like magic. It’s seen better days though and an upgrade’s well overdue. This HP OfficeJet Pro 8730 looks like it ticks all the same boxes: print, copy, scan, and fax. (Really? Does anyone fax anything any more? I guess it's good to know the facility’s there, just in case.) Printing over WiFi is more-or- less standard these days.

Ed Dawson

HP OfficeJet Pro 8730

As a freelance writer who is always on the go, I like my technology to be both efficient and effective so I can do my job well. The HP OfficeJet Pro 8730 Inkjet Printer ticks all the boxes in terms of form factor, performance and user interface.

Michael Hargreaves

Windows 10 for Business / Dell XPS 13

I’d happily recommend this touchscreen laptop and Windows 10 as a great way to get serious work done at a desk or on the road.

Aysha Strobbe

Windows 10 / HP Spectre x360

Ultimately, I think the Windows 10 environment is excellent for me as it caters for so many different uses. The inclusion of the Xbox app is also great for when you need some downtime too!

Mark Escubio

Windows 10 / Lenovo Yoga 910

For me, the Xbox Play Anywhere is a great new feature as it allows you to play your current Xbox games with higher resolutions and better graphics without forking out extra cash for another copy. Although available titles are still scarce, but I’m sure it will grow in time.

Featured Content

Latest Jobs

Don’t have an account? Sign up here

Don't have an account? Sign up now

Forgot password?