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Vendor advisories

Microsoft Security Response Center

Browse 15,942 advisories from this official source. Search by product, CVE, severity, or advisory ID.

Current Checked 5 hours ago Checked every 6 hours
All vendor sources Official source

15,942 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.

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Microsoft Security Response CenterCVE-2026-88130
HighCVSS 6.5

Role: DNS Server Denial of Service Vulnerability

Out-of-bounds read in DNS Server allows an authorized attacker to deny service over a network.

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.

CVE-2026-88130
Read the vendor advisory Watch this product
Microsoft Security Response CenterCVE-2026-88129
HighCVSS 6.5

Role: DNS Server Denial of Service Vulnerability

Out-of-bounds read in DNS Server allows an authorized attacker to deny service over a network.

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.

CVE-2026-88129
Read the vendor advisory Watch this product
Microsoft Security Response CenterCVE-2026-88128
HighCVSS 7.8

Windows DWM Core Library Elevation of Privilege Vulnerability

Heap-based buffer overflow in Windows DWM Core Library allows an authorized attacker to elevate privileges locally.

Affected productsWindows 11 Version 26H2 for x64-based Systems, Windows 11 Version 26H2 for ARM64-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.

CVE-2026-88128
Read the vendor advisory Watch this product
Microsoft Security Response CenterCVE-2026-88127
HighCVSS 7.0

Windows SMB Server Elevation of Privilege Vulnerability

Use after free in Windows SMB Server 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.

CVE-2026-88127
Read the vendor advisory Watch this product
Microsoft Security Response CenterCVE-2026-88126
HighCVSS 7.8

WebDAV Elevation of Privilege Vulnerability

Untrusted pointer dereference in WebDAV 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 versions10.0.17763.9376, 10.0.20348.5761, 10.0.19044.7807, 10.0.19045.7807
Vendor guidance

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

CVE-2026-88126
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Microsoft Security Response CenterCVE-2026-88125
HighCVSS 6.5

Role: DNS Server Denial of Service Vulnerability

Out-of-bounds read in DNS Server allows an authorized attacker to deny service over a network.

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.

CVE-2026-88125
Read the vendor advisory Watch this product
Microsoft Security Response CenterCVE-2026-88124
HighCVSS 7.0

Windows Installer Elevation of Privilege Vulnerability

Use after free in Windows Installer allows an authorized attacker to elevate privileges locally.

Affected productsWindows 11 Version 26H2 for x64-based Systems, Windows 11 Version 26H2 for ARM64-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.

CVE-2026-88124
Read the vendor advisory Watch this product
Microsoft Security Response CenterCVE-2026-88123
HighCVSS 6.5

Role: DNS Server Denial of Service Vulnerability

Out-of-bounds read in DNS Server allows an authorized attacker to deny service over a network.

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.

CVE-2026-88123
Read the vendor advisory Watch this product
Microsoft Security Response CenterCVE-2026-88122
HighCVSS 6.5

Role: DNS Server Denial of Service Vulnerability

Out-of-bounds read in DNS Server allows an authorized attacker to deny service over a network.

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.

CVE-2026-88122
Read the vendor advisory Watch this product
Microsoft Security Response CenterCVE-2026-88121
HighCVSS 8.0

Windows Background Intelligent Transfer Service (BITS) Remote Code Execution Vulnerability

Use after free in Windows Background Intelligent Transfer Service (BITS) allows an unauthorized attacker to execute code over a network.

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.

CVE-2026-88121
Read the vendor advisory Watch this product
Microsoft Security Response CenterCVE-2026-88118
HighCVSS 7.8

Windows Background Intelligent Transfer Service (BITS) Elevation of Privilege Vulnerability

Integer overflow or wraparound in Windows Background Intelligent Transfer Service (BITS) 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 versions10.0.17763.9376, 10.0.20348.5761, 10.0.19044.7807, 10.0.19045.7807
Vendor guidance

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

CVE-2026-88118
Read the vendor advisory Watch this product
Microsoft Security Response CenterCVE-2026-88116
HighCVSS 8.8

Windows Domain Name Service Remote Code Execution Vulnerability

Untrusted pointer dereference in DNS Server allows an unauthorized attacker to execute code over a network.

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.

CVE-2026-88116
Read the vendor advisory Watch this product
Microsoft Security Response CenterCVE-2026-88115
HighCVSS 8.8

Windows Server for NFS Remote Code Execution Vulnerability

Out-of-bounds read in Windows Server for NFS 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 versions10.0.17763.9376, 10.0.20348.5761, 10.0.26100.33650, 10.0.14393.9612
Vendor guidance

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

CVE-2026-88115
Read the vendor advisory Watch this product
Microsoft Security Response CenterCVE-2026-88114
HighCVSS 8.8

Windows Domain Name Service Remote Code Execution Vulnerability

Untrusted pointer dereference in DNS Server 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 versions10.0.17763.9376, 10.0.20348.5761, 10.0.19044.7807, 10.0.19045.7807
Vendor guidance

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

CVE-2026-88114
Read the vendor advisory Watch this product
Microsoft Security Response CenterCVE-2026-88113
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 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows 10 Version 21H2 for 32-bit Systems, Windows 10 Version 21H2 for ARM64-based Systems
Fixed versions10.0.17763.9376, 10.0.19044.7807, 10.0.19045.7807, 10.0.26200.9711
Vendor guidance

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

CVE-2026-88113
Read the vendor advisory Watch this product
Microsoft Security Response CenterCVE-2026-88112
HighCVSS 8.8

Windows Domain Name Service Remote Code Execution Vulnerability

Untrusted pointer dereference in DNS Server allows an unauthorized attacker to execute code over a network.

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 KB5126836.

CVE-2026-88112
Read the vendor advisory Watch this product
Microsoft Security Response CenterCVE-2026-88110
HighCVSS 7.0

Windows Graphics Kernel Elevation of Privilege Vulnerability

Heap-based buffer overflow in Windows Graphics Kernel 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 Server 2025 (Server Core installation), Windows 11 Version 25H2 for ARM64-based Systems
Fixed versions10.0.26300.9711, 10.0.26100.33650, 10.0.26200.9711, 10.0.26100.9711
Vendor guidance

Install KB5127648. Install KB5126646.

CVE-2026-88110
Read the vendor advisory Watch this product
Microsoft Security Response CenterCVE-2026-88109
HighCVSS 7.8

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 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

CVE-2026-88109
Read the vendor advisory Watch this product
Microsoft Security Response CenterCVE-2026-88107
HighCVSS 7.0

Windows Cloud Files Mini Filter Driver Elevation of Privilege Vulnerability

Use after free in Windows Cloud Files Mini Filter Driver 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 versions10.0.17763.9376, 10.0.19044.7807, 10.0.19045.7807, 10.0.20348.5761
Vendor guidance

Install KB5126651. Install KB5126657. Install KB5126655. Install KB5126653. Install KB5127648. Install KB5126646. Install KB5127646.

CVE-2026-88107
Read the vendor advisory Watch this product
Microsoft Security Response CenterCVE-2026-88106
HighCVSS 7.0

Windows Cloud Files Mini Filter Driver Elevation of Privilege Vulnerability

Use after free in Windows Cloud Files Mini Filter Driver 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, 10.0.26100.33650
Vendor guidance

Install KB5127648. Install KB5126646. Install KB5126651. Install KB5126657. Install KB5126655. Install KB5126653. Install KB5127646.

CVE-2026-88106
Read the vendor advisory Watch this product
Microsoft Security Response CenterCVE-2026-88105
HighCVSS 7.8

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 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows 10 Version 21H2 for 32-bit Systems, Windows 10 Version 21H2 for ARM64-based Systems
Fixed versions10.0.17763.9376, 10.0.19044.7807, 10.0.19045.7807, 10.0.26200.9711
Vendor guidance

Install KB5126651. Install KB5126657. Install KB5127648. Install KB5126653. Install KB5127646. Install KB5126868.

CVE-2026-88105
Read the vendor advisory Watch this product
Microsoft Security Response CenterCVE-2026-88103
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 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 versions10.0.17763.9376, 10.0.19044.7807, 10.0.19045.7807, 10.0.26200.9711
Vendor guidance

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

CVE-2026-88103
Read the vendor advisory Watch this product
Microsoft Security Response CenterCVE-2026-88102
HighCVSS 9.8

Microsoft Failover Cluster Remote Code Execution Vulnerability

Use after free in Windows Failover Cluster allows an unauthorized attacker to execute code over a network.

Affected productsWindows Server 2019, Windows Server 2019 (Server Core installation), Windows Server 2022, Windows Server 2022 (Server Core installation)
Fixed versions10.0.17763.9376, 10.0.20348.5761, 10.0.26100.33650
Vendor guidance

Install KB5126651. Install KB5126655. Install KB5126646.

CVE-2026-88102
Read the vendor advisory Watch this product
Microsoft Security Response CenterCVE-2026-88101
HighCVSS 7.8

Microsoft Input Method Editor (IME) Elevation of Privilege Vulnerability

Weak authentication in Microsoft Input Method Editor (IME) 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 versions10.0.17763.9376, 10.0.20348.5761, 10.0.19044.7807, 10.0.19045.7807
Vendor guidance

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

CVE-2026-88101
Read the vendor advisory Watch this product
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.

How we check our sources