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.

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11Vendor sources

16,850Advisories collected

6,405Published or updated in 30 days

6,992Marked critical or high

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Connected directly to official vendor sources

The original vendor bulletin remains the authority. SecurityAlert gives you one place to find it and compare the details vendors publish in different formats.

AWS Security Bulletins 171 advisories

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Apple Security Releases 29 advisories

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Cisco Security Advisories 106 advisories

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Citrix Security Bulletins 24 advisories

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Delinea Security Advisories 14 advisories

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Fortinet PSIRT Advisories 55 advisories

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Ivanti Security Advisories 9 advisories

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Microsoft Security Response Center 15,943 advisories

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Palo Alto Networks Security Advisories 59 advisories

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SonicWall PSIRT Advisories 11 advisories

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Ubuntu Security Notices 429 advisories

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16,850 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-2026-85846

Published Oct 13, 2026

HighCVSS 7.0

Web Account Manager Elevation of Privilege Vulnerability

Use after free in Windows Web Account Manager 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.

CVE-2026-85846

Read the vendor advisory Watch this product

Microsoft Security Response CenterCVE-2026-85843

Published Oct 13, 2026

HighCVSS 7.8

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

Use of uninitialized resource in Windows Background Intelligent Transfer Service (BITS) 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.

CVE-2026-85843

Read the vendor advisory Watch this product

Microsoft Security Response CenterCVE-2026-85842

Published Oct 13, 2026

HighCVSS 7.8

Windows Image Acquisition Elevation of Privilege Vulnerability

Use of externally-controlled format string in Windows Image Acquisition 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 21H2 for 32-bit Systems, Windows 10 Version 21H2 for ARM64-based Systems

Fixed versions10.0.26300.9711, 10.0.19044.7807, 10.0.19045.7807, 10.0.26100.33650

Vendor guidance

Install KB5127648. Install KB5126657. Install KB5126646. Install KB5126653. Install KB5127646.

CVE-2026-85842

Read the vendor advisory Watch this product

Microsoft Security Response CenterCVE-2026-85841

Published Oct 13, 2026

HighCVSS 6.6

Windows DHCP Server Remote Code Execution Vulnerability

Use after free in Windows DHCP Server allows an authorized 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-2026-85841

Read the vendor advisory Watch this product

Microsoft Security Response CenterCVE-2026-85840

Published Oct 13, 2026

HighCVSS 6.5

Windows Event Viewer Information Disclosure Vulnerability

Files or directories accessible to external parties in Windows Event Viewer allows an authorized attacker to disclose information 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. Install KB5126835. Install KB5126836.

CVE-2026-85840

Read the vendor advisory Watch this product

Microsoft Security Response CenterCVE-2026-85837

Published Oct 13, 2026

HighCVSS 7.8

Windows Kernel Elevation of Privilege Vulnerability

Out-of-bounds read in Windows 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. Install KB5127646.

CVE-2026-85837

Read the vendor advisory Watch this product

Microsoft Security Response CenterCVE-2026-85836

Published Oct 13, 2026

HighCVSS 7.8

Windows Kernel Elevation of Privilege Vulnerability

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

Fixed versions10.0.26300.9711, 10.0.26100.33650, 10.0.26200.9711, 10.0.26100.9711

Vendor guidance

Install KB5127648. Install KB5126646. Install KB5127646.

CVE-2026-85836

Read the vendor advisory Watch this product

Microsoft Security Response CenterCVE-2026-85835

Published Oct 13, 2026

HighCVSS 5.5

Servicing Stack Updates Information Disclosure Vulnerability

Buffer over-read in Servicing Stack Updates allows an authorized attacker to disclose information locally.

Affected productsWindows Server 2025 (Server Core installation), Windows 11 Version 25H2 for ARM64-based Systems, Windows 11 Version 25H2 for x64-based Systems, Windows 11 Version 24H2 for ARM64-based Systems

Fixed versions10.0.26100.33650, 10.0.26200.9711, 10.0.26100.9711, 10.0.28000.3231

Vendor guidance

Install KB5126646. Install KB5127648. Install KB5127646.

CVE-2026-85835

Read the vendor advisory Watch this product

Microsoft Security Response CenterCVE-2026-85834

Published Oct 13, 2026

HighCVSS 7.0

Windows TCP/IP Elevation of Privilege Vulnerability

Heap-based buffer overflow in Windows TCP/IP 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-2026-85834

Read the vendor advisory Watch this product

Microsoft Security Response CenterCVE-2026-85833

Published Oct 13, 2026

HighCVSS 7.8

Windows Modern Device Management (MDM) Elevation of Privilege Vulnerability

Use after free in Windows Modern Device Management (MDM) allows an authorized attacker to elevate privileges locally.

Affected productsWindows Server 2012 R2, Windows Server 2012 R2 (Server Core installation), Windows 10 Version 1607 for 32-bit Systems, Windows 10 Version 1607 for x64-based Systems

Fixed versions6.3.9600.23470, 10.0.14393.9612, 10.0.17763.9376, 10.0.19044.7807

Vendor guidance

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

CVE-2026-85833

Read the vendor advisory Watch this product

Microsoft Security Response CenterCVE-2026-85832

Published Oct 13, 2026

HighCVSS 7.8

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

Heap-based buffer overflow 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-2026-85832

Read the vendor advisory Watch this product

Microsoft Security Response CenterCVE-2026-85831

Published Oct 13, 2026

HighCVSS 5.5

Windows Biometric Service Information Disclosure Vulnerability

Heap-based buffer overflow in Windows Biometric Service allows an authorized attacker to disclose information 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.

CVE-2026-85831

Read the vendor advisory Watch this product

Microsoft Security Response CenterCVE-2026-85830

Published Oct 13, 2026

HighCVSS 5.5

Windows Installer Information Disclosure Vulnerability

Out-of-bounds read in Windows Installer allows an authorized attacker to disclose information 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-2026-85830

Read the vendor advisory Watch this product

Microsoft Security Response CenterCVE-2026-85829

Published Oct 13, 2026

HighCVSS 7.8

Windows Wired AutoConfig Service Elevation of Privilege Vulnerability

Double free in Windows Wired AutoConfig 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, 10.0.20348.5761, 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-2026-85829

Read the vendor advisory Watch this product

Microsoft Security Response CenterCVE-2026-85828

Published Oct 13, 2026

HighCVSS 7.0

WebDAV Elevation of Privilege Vulnerability

Heap-based buffer overflow 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-2026-85828

Read the vendor advisory Watch this product

Microsoft Security Response CenterCVE-2026-85827

Published Oct 13, 2026

HighCVSS 7.0

WebDAV Elevation of Privilege Vulnerability

Heap-based buffer overflow in WebDAV allows an authorized attacker to elevate privileges locally.

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-2026-85827

Read the vendor advisory Watch this product

Microsoft Security Response CenterCVE-2026-85826

Published Oct 13, 2026

HighCVSS 7.0

Windows Fast FAT Driver Elevation of Privilege Vulnerability

Out-of-bounds write in Windows Fast FAT 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, 10.0.20348.5761, 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-2026-85826

Read the vendor advisory Watch this product

Microsoft Security Response CenterCVE-2026-85825

Published Oct 13, 2026

HighCVSS 7.0

Windows Universal Disk Format File System Driver (UDFS) Elevation of Privilege Vulnerability

Use after free in Windows Universal Disk Format File System Driver (UDFS) 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-2026-85825

Read the vendor advisory Watch this product

Microsoft Security Response CenterCVE-2026-85824

Published Oct 13, 2026

HighCVSS 7.0

Windows Composite Image File System Elevation of Privilege Vulnerability

Use after free in Windows Composite Image File System allows an authorized attacker to elevate privileges locally.

Affected productsWindows Server 2022, Windows Server 2022 (Server Core installation), Windows 10 Version 21H2 for 32-bit Systems, Windows 10 Version 21H2 for ARM64-based Systems

Fixed versions10.0.20348.5761, 10.0.19044.7807, 10.0.19045.7807, 10.0.26100.33650

Vendor guidance

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

CVE-2026-85824

Read the vendor advisory Watch this product

Microsoft Security Response CenterCVE-2026-85823

Published Oct 13, 2026

HighCVSS 7.0

Windows Composite Image File System Elevation of Privilege Vulnerability

Use after free in Windows Composite Image File System allows an authorized attacker to elevate privileges locally.

Affected productsWindows Server 2022, Windows Server 2022 (Server Core installation), Windows Server 2025 (Server Core installation), Windows 11 Version 25H2 for ARM64-based Systems

Fixed versions10.0.20348.5761, 10.0.26100.33650, 10.0.26200.9711, 10.0.26100.9711

Vendor guidance

Install KB5126655. Install KB5126646. Install KB5127648. Install KB5127646.

CVE-2026-85823

Read the vendor advisory Watch this product

Microsoft Security Response CenterCVE-2026-85821

Published Oct 13, 2026

HighCVSS 6.5

Windows Universal Disk Format File System Driver (UDFS) Information Disclosure Vulnerability

Out-of-bounds read in Windows Universal Disk Format File System Driver (UDFS) allows an authorized attacker to disclose information locally.

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-2026-85821

Read the vendor advisory Watch this product

Microsoft Security Response CenterCVE-2026-85820

Published Oct 13, 2026

HighCVSS 7.8

Windows Universal Disk Format File System Driver (UDFS) Elevation of Privilege Vulnerability

Use after free in Windows Universal Disk Format File System Driver (UDFS) 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-2026-85820

Read the vendor advisory Watch this product

Microsoft Security Response CenterCVE-2026-85818

Published Oct 13, 2026

HighCVSS 9.0

Windows Schannel Spoofing Vulnerability

Improper verification of cryptographic signature in Windows Schannel allows an unauthorized attacker to perform spoofing over a network.

Affected productsWindows 11 Version 26H2 for ARM64-based Systems, Windows 11 Version 26H2 for x64-based Systems, Windows Server 2022, Windows Server 2022 (Server Core installation)

Fixed versions10.0.26300.9711, 10.0.20348.5761, 10.0.26100.33650, 10.0.26200.9711

Vendor guidance

Install KB5127648. Install KB5126655. Install KB5126646. Install KB5126653. Install KB5127646.

CVE-2026-85818

Read the vendor advisory Watch this product

Microsoft Security Response CenterCVE-2026-85817

Published Oct 13, 2026

HighCVSS 8.8

Microsoft PowerShell Remote Code Execution Vulnerability

Reliance on untrusted inputs in a security decision in Windows PowerShell allows an unauthorized attacker to execute code over a network.

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-2026-85817

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