PrintNightmare - CVE-2021-34527 - Do latest Cumulative Updates for Win Server 2016/2019 fix this issue ?

Question

Hi,

I would like to ask you if updates:
2021-07 Cumulative Update for Windows Server 2016 for x64-based Systems (KB5004238)
2021-07 Cumulative Update for Windows Server 2019 for x64-based Systems (KB5004244)

contains also fix for PrintNightmare CVE-2021-34527. Because updates mentioned above are replacing following updates which fix PrintNightmare CVE-2021-34527:
2021-07 Cumulative Update for Windows Server 2016 for x64-based Systems (KB5004948)
2021-07 Cumulative Update for Windows Server 2019 for x64-based Systems (KB5004947)

but in KB articles I didn't find anything about that:
https://support.microsoft.com/help/5004238
https://support.microsoft.com/help/5004947

And when we approve both (KB5004238 & KB5004948; KB5004244 & KB5004947) at the same time the latest one will be installed.
Thank you for your answer.

Kind regards
Ivan

Answer 1

Hi @Ivan Magdolen ,

The July 13, 2021 cumulative security updates contain all previous security fixes - including the security fix for the print spooler vulnerability (CVE-2021-34527).

Reference:
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-34527

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If the reply was helpful please don't forget to upvote and/or accept as answer, thank you!

Best regards,
Leon

Answer 2

There is a remaining security risk with local execution.

Answer 3

@Ivan Magdolen
Please review the below pictures and screenshots will be helpful:

Thanks for your time and have a nice day:)

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