TLP Rating: Clear 
CERT Vanuatu (CERTVU) and the Office of the Chief Information Officer (OGCIO) provides the following advisory by its international partners.
CERTVU office would like to advise its constituents on critical vulnerabilities identified in Microsoft Windows systems.
What it means
Attackers can infiltrate and compromise Windows devices if users do not apply regular Windows updates.
Which Microsoft systems are affected?
All supported versions of Microsoft Windows are vulnerable and directly affected by these vulnerabilities including Windows:
- Windows 7
- Windows 8.1
- Windows 10
- Windows Server 2008
- Windows Server 2012
- Windows Server 2016
- Windows Server 2019 Ver1909, Ver2004 and Ver20H2
Prevention
Apply the February 2021 Security updates as soon as possible
References
1. https://msrc-blog.microsoft.com/2021/02/09/multiple-security-updates-affecting-tcp-ip/
2. https://www.cert.govt.nz/individuals/alerts/critical-vulnerabilities-in-microsoft-windows/
- Download advisory (English): Critical vulnerabilities identified in Microsoft Windows
- Download advisory (French): Identification de vulnérabilités critiques dans Microsoft Windows
- Download advisory (Bislama): Olgeta kritikol vulnerabiliti we oli faenemaot long Microsoft Windows.