We highlight current cyber security threats in New Zealand, and provide guidance on what to do if they affect you.

2:45pm, 10 February 2021

TLP Rating: Clear

Critical vulnerabilities identified in Microsoft Windows

As part of regular security updates, Microsoft has released fixes for critical vulnerabilities in Windows which an attacker could use to compromise Windows devices.

By applying the latest updates from Microsoft, you can secure all your Windows devices.

What's happening

Systems affected

All supported versions of Microsoft Windows are known to be affected by these vulnerabilities.

What to look for

How to tell if you're at risk

If you use Windows and haven’t applied the February 2021 security updates which were released Wednesday 10 February (NZ time), then you’re at risk.

What to do


Apply the February 2021 security updates to all Windows devices as soon as possible.

More information

Microsoft Security Response Centre has written about these vulnerabilities. External Link  

If you require more information or further support, submit a report on our website or contact us on 0800 CERTNZ.

Report an incident to CERT NZ External Link

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