Windows 10 and Server critical security update


Windows 10 and Server: Microsoft today released a security update for a protocol vulnerability SMBv3 which was accidentally leaked online earlier this week during Patch Tuesday March 2020.

The update is available as KB4551762, for Windows 10, in versions 1903 and 1909 and for Windows Server 2019, in versions 1903 and 1909.

Windows 10

The update fixes CVE-2020-0796 vulnerability in Server Message Block, a protocol for sharing files, printers, and other resources on local networks and the Internet.

The bug allowed attackers to connect to remote systems where SMB was enabled and to run malicious code with SYSTEM privileges.

Earlier this week, due to a leak of communication between Microsoft and some antivirus companies, details released for this particular internet error.

Antivirus companies report that the bug could be used to develop worms, with similar capabilities used by ransomware WannaCry and NotPetya the 2017.

So although Microsoft had no plans to release other fixes this month, it was eventually forced to release the current patch.

Today's fixes were probably released on time, and according to the company the vulnerability only affects the Windows 10 and Windows Server 2019 (1903 and 1909).

For those who cannot install the update directly, Microsoft has detailed vulnerability information on a separate security advisory.


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