Vendor advisories

Security advisories from the vendors you use.

Search new and updated bulletins from Microsoft, Citrix, Cisco, Palo Alto Networks, Fortinet, Ivanti, Delinea, Ubuntu, and AWS. We keep each vendor's advisory ID, affected products, CVEs, severity, dates, and available fix guidance together.

11Vendor sources
16,884Advisories collected
6,376Published or updated in 30 days
6,999Marked critical or high
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The original vendor bulletin remains the authority. SecurityAlert gives you one place to find it and compare the details vendors publish in different formats.

16,884 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-2026-103567
HighCVSS 5.5

Windows Broadcast DVR User Service Information Disclosure Vulnerability

Buffer over-read in Windows Broadcast DVR User Service allows an authorized attacker to disclose information locally.

Affected productsWindows Server 2019, Windows Server 2019 (Server Core installation), Windows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems
Fixed versions10.0.17763.9376, 10.0.19044.7807, 10.0.19045.7807, 10.0.22631.7652
Vendor guidance

Install KB5126651. Install KB5126657. Install KB5126653. Install KB5127648. Install KB5127646.

Microsoft Security Response CenterCVE-2026-103565
HighCVSS 7.0

Windows Broadcast DVR User Service Elevation of Privilege Vulnerability

Use after free in Windows Broadcast DVR User Service allows an authorized attacker to elevate privileges locally.

Affected productsWindows Server 2019, Windows Server 2019 (Server Core installation), Windows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems
Fixed versions10.0.17763.9376, 10.0.19044.7807, 10.0.19045.7807, 10.0.22631.7652
Vendor guidance

Install KB5126651. Install KB5126657. Install KB5126653. Install KB5127648. Install KB5127646.

Microsoft Security Response CenterCVE-2026-103560
HighCVSS 5.5

Role: DNS Server Tampering Vulnerability

Improper authorization in DNS Server allows an authorized attacker to perform tampering locally.

Affected productsWindows Server 2012, Windows Server 2012 (Server Core installation), Windows Server 2012 R2, Windows Server 2012 R2 (Server Core installation)
Fixed versions6.2.9200.26434, 6.3.9600.23470, 10.0.14393.9612, 10.0.17763.9376
Vendor guidance

Install KB5126835. Install KB5126836. Install KB5126868. Install KB5126651. Install KB5126655. Install KB5126646.

Microsoft Security Response CenterCVE-2026-103558
HighCVSS 7.5

Windows Routing and Remote Access Service (RRAS) Denial of Service Vulnerability

Deadlock in Windows Routing and Remote Access Service (RRAS) allows an unauthorized attacker to deny service over a network.

Affected productsWindows 11 Version 24H2 for x64-based Systems, Windows 11 Version 25H2 for ARM64-based Systems, Windows 11 Version 25H2 for x64-based Systems, Windows 11 Version 26H2 for ARM64-based Systems
Fixed versions10.0.26100.9711, 10.0.26200.9711, 10.0.26300.9711, 10.0.26100.33650
Vendor guidance

Install KB5127648. Install KB5126646. Install KB5127646. Install KB5126835. Install KB5126836. Install KB5126868. Install KB5126651. Install KB5126657. Install KB5126655. Install KB5126653.

Microsoft Security Response CenterCVE-2026-103555
HighCVSS 7.0

Virtual Hard Disk (VHD) Miniport Driver Elevation of Privilege Vulnerability

Heap-based buffer overflow in Virtual Hard Disk (VHD) Miniport Driver allows an authorized attacker to elevate privileges locally.

Affected productsWindows 11 Version 26H2 for ARM64-based Systems, Windows 11 Version 26H2 for x64-based Systems, Windows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems
Fixed versions10.0.26300.9711, 10.0.17763.9376, 10.0.20348.5761, 10.0.19044.7807
Vendor guidance

Install KB5127648. Install KB5126651. Install KB5126655. Install KB5126657. Install KB5126646. Install KB5126653. Install KB5127646. Install KB5126868. Install KB5126835. Install KB5126836.

Microsoft Security Response CenterCVE-2026-103554
HighCVSS 7.0

Windows Broadcast DVR User Service Elevation of Privilege Vulnerability

Use after free in Windows Broadcast DVR User Service allows an authorized attacker to elevate privileges locally.

Affected productsWindows 11 Version 24H2 for ARM64-based Systems, Windows 11 Version 24H2 for x64-based Systems, Windows 11 Version 25H2 for ARM64-based Systems, Windows 11 Version 25H2 for x64-based Systems
Fixed versions10.0.26100.9711, 10.0.26200.9711, 10.0.26300.9711, 10.0.17763.9376
Vendor guidance

Install KB5127648. Install KB5126651. Install KB5126657. Install KB5126653. Install KB5127646.

Microsoft Security Response CenterCVE-2026-103553
HighCVSS 7.8

Windows Partition Management Driver Elevation of Privilege Vulnerability

Out-of-bounds read in Windows Partition Management Driver allows an authorized attacker to elevate privileges locally.

Affected productsWindows Server 2012, Windows Server 2012 (Server Core installation), Windows Server 2012 R2, Windows Server 2012 R2 (Server Core installation)
Fixed versions6.2.9200.26434, 6.3.9600.23470, 10.0.14393.9612, 10.0.17763.9376
Vendor guidance

Install KB5126835. Install KB5126836. Install KB5126868. Install KB5126651. Install KB5126657. Install KB5126655. Install KB5126653. Install KB5127648. Install KB5126646. Install KB5127646.

Microsoft Security Response CenterCVE-2026-102869
HighCVSS 8.8

.NET and Visual Studio Elevation of Privilege Vulnerability

Access of resource using incompatible type ('type confusion') in .NET and Visual Studio allows an unauthorized attacker to elevate privileges over a network.

Affected productsMicrosoft Visual Studio 2022 version 17.14, Microsoft Visual Studio 2026 version 18.10, Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 on Windows 10 version 1607, Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2016
Fixed versions17.14.42, 18.10.4, 2.0.50727.8987 AND 3.0.30729.8982 AND 4.7.4150.0, 2.0.50727.9073 AND 3.0.30729.9070 AND 4.7.4150.0
Vendor guidance

Release Notes Install KB5126868. Install KB5127666. Install KB5127685. Install KB5127683. Install KB5127687. Install KB5127667. Install KB5127668. Install KB5127684. Install KB5127686. Install KB5127688. Install KB512...

Microsoft Security Response CenterCVE-2026-102867
HighCVSS 6.5

Microsoft Office Word Information Disclosure Vulnerability

Out-of-bounds read in Microsoft Office Word allows an unauthorized attacker to disclose information over a network.

Affected productsMicrosoft 365 Apps for Enterprise for 32-bit Systems, Microsoft 365 Apps for Enterprise for 64-bit Systems, Microsoft Office LTSC 2021 for 64-bit editions, Microsoft Office LTSC 2021 for 32-bit editions
Fixed versionshttps://aka.ms/OfficeSecurityReleases, 16.0.14334.20974, 16.0.17932.21056
Vendor guidance

Release Notes

Microsoft Security Response CenterCVE-2026-102864
HighCVSS 4.6

Microsoft Office SharePoint 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 Server Subscription Edition
Fixed versions16.0.20326.20190
Vendor guidance

Install KB5002927.

Microsoft Security Response CenterCVE-2026-102863
HighCVSS 8.8

Microsoft Office SharePoint Elevation of Privilege Vulnerability

Improper control of generation of code ('code injection') in Microsoft Office SharePoint allows an authorized attacker to elevate privileges over a network.

Affected productsMicrosoft SharePoint Server Subscription Edition
Fixed versions16.0.20326.20190
Vendor guidance

Install KB5002927.

Microsoft Security Response CenterCVE-2026-102859
HighCVSS 4.6

Microsoft Office SharePoint 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 Server Subscription Edition
Fixed versions16.0.20326.20190
Vendor guidance

Install KB5002927.

Microsoft Security Response CenterCVE-2026-102850
HighCVSS 8.8

Microsoft Office Access Remote Code Execution Vulnerability

Heap-based buffer overflow in Microsoft Office Access allows an unauthorized attacker to execute code over a network.

Affected productsMicrosoft Office LTSC 2021 for 64-bit editions, Microsoft Office LTSC 2021 for 32-bit editions, Microsoft Office LTSC 2024 for 64-bit editions, Microsoft Office LTSC 2024 for 32-bit editions
Fixed versions16.0.14334.20974, 16.0.17932.21056, https://aka.ms/OfficeSecurityReleases
Vendor guidance

Release Notes

Microsoft Security Response CenterCVE-2026-102849
HighCVSS 8.8

Microsoft Office Access Remote Code Execution Vulnerability

Heap-based buffer overflow in Microsoft Office Access allows an unauthorized attacker to execute code over a network.

Affected productsMicrosoft Office LTSC 2021 for 64-bit editions, Microsoft Office LTSC 2021 for 32-bit editions, Microsoft Office LTSC 2024 for 64-bit editions, Microsoft Office LTSC 2024 for 32-bit editions
Fixed versions16.0.14334.20974, 16.0.17932.21056, https://aka.ms/OfficeSecurityReleases
Vendor guidance

Release Notes

Before you act

Start with the vendor's bulletin.

We normalize the fields that vendors publish so you can search and compare advisories in one place. We do not replace the original bulletin or turn a product-name match into proof that a system is vulnerable.

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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