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Microsoft releases Windows 10 KB5120249 extended security update

📅 11 August 2026 at 18:26 UTC📰 Bleeping ComputerView original source ↗
Microsoft releases Windows 10 KB5120249 extended security update

Microsoft has released Windows 10 KB5120249 Extended Security Updates for versions 22H2 and 21H2 to fix security vulnerabilities and bugs. [...]

🤖 AI BriefingAuto-generated threat analysis
🔍Threat Overview

Microsoft released a Windows 10 Extended Security Update (KB5120249) to fix security vulnerabilities and bugs, including a File History backup issue and Secure Boot certificate deployment issues.

⚙️Technical Details
Affected Systems
Windows 10 versions 22H2 and 21H2
Attack Vectors
Server Message Block (SMB)
💥Impact Assessment
Severity: Medium
Who Is at Risk
Non-managed business devices and PCs with Windows 10 versions 22H2 and 21H2
🛡️Recommended Actions
1Check for updates manually or through Windows Update
2Ensure valid credentials are used when accessing affected systems
3Monitor system logs for any issues related to File History backups
📦Affected Products
Windows 10 versions 22H2 and 21H2

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