Vendor advisories

Microsoft Security Response Center

Browse 17,776 advisories from this official source. Search by product, CVE, severity, or advisory ID.

Current Checked about an hour ago Checked every 6 hours

17,776 advisories

Each date says whether the vendor published or updated the bulletin. A vendor bulletin describes products that may be affected. It does not prove that the vulnerable product or version is installed in your environment.

RSS for these results
Microsoft Security Response CenterCVE-2026-48578
HighCVSS 7.9

Secure Boot Security Feature Bypass Vulnerability

Improper access control in Windows Secure Boot allows an authorized attacker to elevate privileges locally.

Affected productsWindows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows Server 2019, Windows Server 2019 (Server Core installation)
Fixed versions10.0.17763.8880, 10.0.20348.5256, 10.0.19044.7417, 10.0.19045.7417
Vendor guidance

Install KB5094123. Install KB5094128. Install KB5094127. Install KB5094125. Install KB5094126. Install KB5093998. Install KB5095051. Install KB5094122. Install KB5094042. Install KB5094041.

Microsoft Security Response CenterCVE-2026-48576
HighCVSS 7.9

Secure Boot Security Feature Bypass Vulnerability

No cwe for this issue in Windows Secure Boot allows an authorized attacker to bypass a security feature locally.

Affected productsWindows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows Server 2019, Windows Server 2019 (Server Core installation)
Fixed versions10.0.17763.8880, 10.0.20348.5256, 10.0.19044.7417, 10.0.19045.7417
Vendor guidance

Install KB5094123. Install KB5094128. Install KB5094127. Install KB5094125. Install KB5094126. Install KB5093998. Install KB5095051. Install KB5094122. Install KB5094042. Install KB5094041.

Microsoft Security Response CenterCVE-2026-48575
HighCVSS 7.9

Secure Boot Security Feature Bypass Vulnerability

Protection mechanism failure in Windows Secure Boot allows an authorized attacker to bypass a security feature locally.

Affected productsWindows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows Server 2019, Windows Server 2019 (Server Core installation)
Fixed versions10.0.17763.8880, 10.0.20348.5256, 10.0.19044.7417, 10.0.19045.7417
Vendor guidance

Install KB5094123. Install KB5094128. Install KB5094127. Install KB5094125. Install KB5094126. Install KB5093998. Install KB5095051. Install KB5094122. Install KB5094042. Install KB5094041.

Microsoft Security Response CenterCVE-2026-48573
HighCVSS 7.9

Secure Boot Security Feature Bypass Vulnerability

No cwe for this issue in Windows Secure Boot allows an authorized attacker to bypass a security feature locally.

Affected productsWindows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows Server 2019, Windows Server 2019 (Server Core installation)
Fixed versions10.0.17763.8880, 10.0.20348.5256, 10.0.19044.7417, 10.0.19045.7417
Vendor guidance

Install KB5094123. Install KB5094128. Install KB5094127. Install KB5094125. Install KB5094126. Install KB5093998. Install KB5095051. Install KB5094122. Install KB5094042. Install KB5094041.

Microsoft Security Response CenterCVE-2026-48570
HighCVSS 7.9

Secure Boot Security Feature Bypass Vulnerability

Protection mechanism failure in Windows Secure Boot allows an authorized attacker to bypass a security feature locally.

Affected productsWindows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows Server 2019, Windows Server 2019 (Server Core installation)
Fixed versions10.0.17763.8880, 10.0.20348.5256, 10.0.19044.7417, 10.0.19045.7417
Vendor guidance

Install KB5094123. Install KB5094128. Install KB5094127. Install KB5094125. Install KB5094126. Install KB5093998. Install KB5095051. Install KB5094122. Install KB5094042. Install KB5094041.

Microsoft Security Response CenterCVE-2026-48568
HighCVSS 7.9

Secure Boot Security Feature Bypass Vulnerability

Protection mechanism failure in Windows Secure Boot allows an authorized attacker to bypass a security feature locally.

Affected productsWindows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows Server 2019, Windows Server 2019 (Server Core installation)
Fixed versions10.0.17763.8880, 10.0.20348.5256, 10.0.19044.7417, 10.0.19045.7417
Vendor guidance

Install KB5094123. Install KB5094128. Install KB5094127. Install KB5094125. Install KB5094126. Install KB5093998. Install KB5095051. Install KB5094122. Install KB5094042. Install KB5094041.

Microsoft Security Response CenterCVE-2026-48562
HighCVSS 4.6

Microsoft SharePoint Server Spoofing Vulnerability

Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.

Affected productsMicrosoft SharePoint Enterprise Server 2016, Microsoft SharePoint Server 2019, Microsoft SharePoint Server Subscription Edition
Fixed versions16.0.5556.1005, 16.0.10417.20153, 16.0.19725.20384
Vendor guidance

Install KB5002880. Install KB5002874. Install KB5002873.

Microsoft Security Response CenterCVE-2026-48560
HighCVSS 5.4

Microsoft SharePoint Server Spoofing Vulnerability

Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.

Affected productsMicrosoft SharePoint Enterprise Server 2016, Microsoft SharePoint Server 2019, Microsoft SharePoint Server Subscription Edition
Fixed versions16.0.5556.1005, 16.0.10417.20153, 16.0.19725.20384
Vendor guidance

Install KB5002880. Install KB5002874. Install KB5002873.

Microsoft Security Response CenterCVE-2026-47656
HighCVSS 7.9

Windows Boot Manager Security Feature Bypass Vulnerability

Protection mechanism failure in Windows Boot Manager allows an authorized attacker to bypass a security feature locally.

Affected productsWindows Server 2019, Windows Server 2019 (Server Core installation), Windows Server 2022, Windows 10 Version 1809 for x64-based Systems
Fixed versions10.0.17763.8880, 10.0.20348.5256, 10.0.19044.7417, 10.0.19045.7417
Vendor guidance

Install KB5094123. Install KB5094128. Install KB5094127. Install KB5094125. Install KB5094126. Install KB5093998. Install KB5095051. Install KB5094122. Install KB5094042. Install KB5094041.

Microsoft Security Response CenterCVE-2026-47653
HighCVSS 8.8

Remote Desktop Client Remote Code Execution Vulnerability

Use after free in Remote Desktop Client allows an unauthorized attacker to execute code over a network.

Affected productsWindows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows Server 2019, Windows Server 2019 (Server Core installation)
Fixed versions10.0.17763.8880, 10.0.20348.5256, 10.0.19044.7417, 10.0.19045.7417
Vendor guidance

Install KB5094123. Install KB5094128. Install KB5094127. Install KB5094125. Install KB5094126. Install KB5093998. Install KB5095051. Install KB5094122. Install KB5094042. Install KB5094041.

Microsoft Security Response CenterCVE-2026-47648
HighCVSS 7.0

Windows Storage Elevation of Privilege Vulnerability

Untrusted search path in Windows Storage allows an authorized attacker to elevate privileges locally.

Affected productsWindows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows Server 2019, Windows Server 2019 (Server Core installation)
Fixed versions10.0.17763.8880, 10.0.20348.5256, 10.0.19044.7417, 10.0.19045.7417
Vendor guidance

Install KB5094123. Install KB5094128. Install KB5094127. Install KB5094125. Install KB5094126. Install KB5093998. Install KB5095051. Install KB5094122. Install KB5094042. Install KB5094041.

Microsoft Security Response CenterCVE-2026-47641
HighCVSS 4.6

Microsoft SharePoint Server Spoofing Vulnerability

Improper input validation in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.

Affected productsMicrosoft SharePoint Enterprise Server 2016, Microsoft SharePoint Server 2019, Microsoft SharePoint Server Subscription Edition
Fixed versions16.0.5556.1005, 16.0.10417.20153, 16.0.19725.20384
Vendor guidance

Install KB5002880. Install KB5002874. Install KB5002873.

Microsoft Security Response CenterCVE-2026-47640
HighCVSS 4.6

Microsoft SharePoint Server Spoofing Vulnerability

Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.

Affected productsMicrosoft SharePoint Enterprise Server 2016, Microsoft SharePoint Server 2019, Microsoft SharePoint Server Subscription Edition
Fixed versions16.0.5556.1005, 16.0.10417.20153, 16.0.19725.20384
Vendor guidance

Install KB5002880. Install KB5002874. Install KB5002873.

Microsoft Security Response CenterCVE-2026-47639
HighCVSS 5.4

Microsoft SharePoint Server Spoofing Vulnerability

Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an unauthorized attacker to perform spoofing over a network.

Affected productsMicrosoft SharePoint Enterprise Server 2016, Microsoft SharePoint Server 2019, Microsoft SharePoint Server Subscription Edition
Fixed versions16.0.5556.1005, 16.0.10417.20153, 16.0.19725.20384
Vendor guidance

Install KB5002880. Install KB5002874. Install KB5002873.

Microsoft Security Response CenterCVE-2026-47638
HighCVSS 4.6

Microsoft SharePoint Server Spoofing Vulnerability

Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.

Affected productsMicrosoft SharePoint Enterprise Server 2016, Microsoft SharePoint Server 2019, Microsoft SharePoint Server Subscription Edition
Fixed versions16.0.5556.1005, 16.0.10417.20153, 16.0.19725.20384
Vendor guidance

Install KB5002880. Install KB5002874. Install KB5002873.

Microsoft Security Response CenterCVE-2026-47637
HighCVSS 4.6

Microsoft SharePoint Server Spoofing Vulnerability

Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.

Affected productsMicrosoft SharePoint Enterprise Server 2016, Microsoft SharePoint Server 2019, Microsoft SharePoint Server Subscription Edition
Fixed versions16.0.5556.1005, 16.0.10417.20153, 16.0.19725.20384
Vendor guidance

Install KB5002880. Install KB5002874. Install KB5002873.

Microsoft Security Response CenterCVE-2026-47634
HighCVSS 7.3

Microsoft SharePoint Server Spoofing Vulnerability

Improper neutralization of special elements in output used by a downstream component ('injection') in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.

Affected productsMicrosoft SharePoint Server 2019, Microsoft SharePoint Server Subscription Edition
Fixed versions16.0.10417.20153, 16.0.19725.20384
Vendor guidance

Install KB5002874. Install KB5002873.

Microsoft Security Response CenterCVE-2026-47631
HighCVSS 8.1

Microsoft Exchange Server Spoofing Vulnerability

Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Exchange Server allows an unauthorized attacker to perform spoofing over a network.

Affected productsMicrosoft Exchange Server 2016 Cumulative Update 23, Microsoft Exchange Server 2019 Cumulative Update 14, Microsoft Exchange Server 2019 Cumulative Update 15, Microsoft Exchange Server Subscription Edition RTM
Fixed versions15.01.2507.071, 15.02.1544.043, 15.02.1748.048, 15.02.2562.045
Vendor guidance

Install KB5103215. Install KB5103214. Install KB5103213. Install KB5103212.

Microsoft Security Response CenterCVE-2026-47293
HighCVSS 7.0

Microsoft Office Click-To-Run Elevation of Privilege Vulnerability

Use after free in Microsoft Office Click-To-Run allows an authorized attacker to elevate privileges locally.

Affected productsMicrosoft Office 2019 for 32-bit editions, Microsoft Office 2019 for 64-bit editions, Microsoft 365 Apps for Enterprise for 32-bit Systems, Microsoft 365 Apps for Enterprise for 64-bit Systems
Fixed versionshttps://aka.ms/OfficeSecurityReleases
Vendor guidance

Click to Run

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Start with the vendor's bulletin.

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Confirm the installed product and version, read the linked vendor guidance, and test the recommended update or mitigation through your normal change process.

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