Critical Security Patches Released by Microsoft for Windows Server
On October 23, 2025, Microsoft rolled out crucial emergency patches addressing a significant remote code execution (RCE) vulnerability that affects all supported versions of Windows Server. RCE vulnerabilities are particularly perilous as they enable cybercriminals to execute harmful code remotely, eliminating the need for physical access to compromised systems.
Details of the Vulnerability
The newly identified security flaw, indexed as CVE-2025-59287, specifically impacts Windows Server Update Services (WSUS).However, Microsoft assures users that servers lacking the WSUS server role are not susceptible to this particular exploit. This out-of-band (OOB) update marks the second emergency release within the month and is cumulative in nature. This means that administrators and users do not need to apply prior updates before implementing this latest patch.
Recommendation from Microsoft
Microsoft has emphasized the importance of this update, stating:
An out-of-band (OOB) update was released today, October 23, 2025, to address this issue. This is a cumulative update, so you do not need to apply any previous updates before installing this update, as it supersedes all previous updates for affected versions. If you haven’t installed the October 2025 Windows security update yet, we recommend you apply this OOB update instead.
List of Affected Versions
The following Windows Server versions are included in this emergency update:
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Windows Server 2025 (KB5070881)
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Windows Server, version 23H2 (KB5070879)
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Windows Server 2022 (KB5070884)
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Windows Server 2019 (KB5070883)
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Windows Server 2016 (KB5070882)
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Windows Server 2012 R2 (KB5070886)
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Windows Server 2012 (KB5070887)
Automatic Update Installation
Users should note that these updates will be automatically downloaded and installed, streamlining the patch management process and ensuring that systems are safeguarded against potential threats.
For further information, you can access the source here.
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