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-2026-83882

Published Oct 13, 2026

HighCVSS 7.8

Windows Kernel Elevation of Privilege Vulnerability

Heap-based buffer overflow in Windows Kernel 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-2026-83882

Read the vendor advisory Watch this product

Microsoft Security Response CenterCVE-2026-83881

Published Oct 13, 2026

HighCVSS 7.8

Windows exFAT File System Elevation of Privilege Vulnerability

Heap-based buffer overflow in Windows exFAT File System 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-2026-83881

Read the vendor advisory Watch this product

Microsoft Security Response CenterCVE-2026-83879

Published Oct 13, 2026

HighCVSS 7.0

Windows Overlay Filter Elevation of Privilege Vulnerability

Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Overlay Filter 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 KB5126836.

CVE-2026-83879

Read the vendor advisory Watch this product

Microsoft Security Response CenterCVE-2026-83877

Published Oct 13, 2026

HighCVSS 7.8

Windows Devices Human Interface Elevation of Privilege Vulnerability

Integer overflow or wraparound in HID Parser Library 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-2026-83877

Read the vendor advisory Watch this product

Microsoft Security Response CenterCVE-2026-83876

Published Oct 13, 2026

HighCVSS 7.8

Windows Shell Elevation of Privilege Vulnerability

Use after free in Windows Shell 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-2026-83876

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Microsoft Security Response CenterCVE-2026-83875

Published Oct 13, 2026

HighCVSS 5.5

Windows Human Interface Device Information Disclosure Vulnerability

Out-of-bounds read in HID Parser Library 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-2026-83875

Read the vendor advisory Watch this product

Microsoft Security Response CenterCVE-2026-83874

Published Oct 13, 2026

HighCVSS 8.8

Windows Event Tracing Remote Code Execution Vulnerability

Heap-based buffer overflow in Windows Event Tracing 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-2026-83874

Read the vendor advisory Watch this product

Microsoft Security Response CenterCVE-2026-83873

Published Oct 13, 2026

HighCVSS 7.8

Windows Shell Elevation of Privilege Vulnerability

Relative path traversal in Windows Shell 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-2026-83873

Read the vendor advisory Watch this product

Microsoft Security Response CenterCVE-2026-83872

Published Oct 13, 2026

HighCVSS 7.8

Windows TCP/IP Local Elevation of Privilege Vulnerability

Incorrect conversion between numeric types in Windows TCP/IP 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-2026-83872

Read the vendor advisory Watch this product

Microsoft Security Response CenterCVE-2026-83871

Published Oct 13, 2026

HighCVSS 7.0

Microsoft OpenSSH for Windows Elevation of Privilege Vulnerability

Heap-based buffer overflow in OpenSSH for Windows 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.

CVE-2026-83871

Read the vendor advisory Watch this product

Microsoft Security Response CenterCVE-2026-83870

Published Oct 13, 2026

HighCVSS 5.5

Windows Aggregated Data Platform Service Information Disclosure Vulnerability

Out-of-bounds read in Windows Aggregated Data Platform Service allows an authorized attacker to disclose information locally.

Affected productsWindows 11 Version 25H2 for ARM64-based Systems, Windows 11 Version 25H2 for x64-based Systems, Windows 11 Version 24H2 for ARM64-based Systems, Windows 11 Version 24H2 for x64-based Systems

Fixed versions10.0.26200.9711, 10.0.26100.9711, 10.0.28000.3231, 10.0.26300.9711

Vendor guidance

Install KB5127648. Install KB5127646.

CVE-2026-83870

Read the vendor advisory Watch this product

Microsoft Security Response CenterCVE-2026-83869

Published Oct 13, 2026

HighCVSS 9.8

Windows Domain Name Service Remote Code Execution Vulnerability

Integer underflow (wrap or wraparound) 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. Install KB5126835. Install KB5126836.

CVE-2026-83869

Read the vendor advisory Watch this product

Microsoft Security Response CenterCVE-2026-83868

Published Oct 13, 2026

HighCVSS 7.0

Microsoft Bluetooth Driver Elevation of Privilege Vulnerability

Concurrent execution using shared resource with improper synchronization ('race condition') in Microsoft Bluetooth 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.

CVE-2026-83868

Read the vendor advisory Watch this product

Microsoft Security Response CenterCVE-2026-83867

Published Oct 13, 2026

HighCVSS 7.8

Windows Push Notifications Elevation of Privilege Vulnerability

Heap-based buffer overflow in Windows Push Notifications 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.

CVE-2026-83867

Read the vendor advisory Watch this product

Microsoft Security Response CenterCVE-2026-83866

Published Oct 13, 2026

HighCVSS 7.0

Windows Win32k Elevation of Privilege Vulnerability

Use after free in Windows Win32K 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.

CVE-2026-83866

Read the vendor advisory Watch this product

Microsoft Security Response CenterCVE-2026-83865

Published Oct 13, 2026

HighCVSS 4.7

Windows Internet (wininet.dll) Tampering Vulnerability

Relative path traversal in Windows Internet (wininet.dll) allows an authorized attacker to perform tampering 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-2026-83865

Read the vendor advisory Watch this product

Microsoft Security Response CenterCVE-2026-83864

Published Oct 13, 2026

HighCVSS 5.5

Windows NTFS Information Disclosure Vulnerability

Improper access control in Windows NTFS 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.

CVE-2026-83864

Read the vendor advisory Watch this product

Microsoft Security Response CenterCVE-2026-83863

Published Oct 13, 2026

HighCVSS 7.8

Servicing Stack Updates Elevation of Privilege Vulnerability

Heap-based buffer overflow in Servicing Stack Updates 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 KB5126649. Install KB5126835. Install KB5127357. Install ...

CVE-2026-83863

Read the vendor advisory Watch this product

Microsoft Security Response CenterCVE-2026-83861

Published Oct 13, 2026

HighCVSS 7.8

Windows Remote Desktop Protocol Elevation of Privilege Vulnerability

Heap-based buffer overflow in Windows Remote Desktop Protocol 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-2026-83861

Read the vendor advisory Watch this product

Microsoft Security Response CenterCVE-2026-83860

Published Oct 13, 2026

HighCVSS 7.5

Windows GDI Denial of Service Vulnerability

Stack-based buffer overflow in Windows GDI allows an unauthorized attacker to deny service 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-2026-83860

Read the vendor advisory Watch this product

Microsoft Security Response CenterCVE-2026-83859

Published Oct 13, 2026

HighCVSS 7.8

Windows NTFS Elevation of Privilege Vulnerability

Use after free in Windows NTFS 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 KB5126836.

CVE-2026-83859

Read the vendor advisory Watch this product

Microsoft Security Response CenterCVE-2026-83857

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.

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-2026-83857

Read the vendor advisory Watch this product

Microsoft Security Response CenterCVE-2026-83856

Published Oct 13, 2026

HighCVSS 7.5

Windows Event Logging Service Remote Code Execution Vulnerability

Out-of-bounds read in Windows Event Logging Service allows an unauthorized attacker to execute code over a network.

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, 10.0.22631.7652

Vendor guidance

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

CVE-2026-83856

Read the vendor advisory Watch this product

Microsoft Security Response CenterCVE-2026-83855

Published Oct 13, 2026

HighCVSS 7.5

Windows WLAN Service Denial of Service Vulnerability

Integer underflow (wrap or wraparound) in Windows WLAN Service allows an unauthorized attacker to deny service over a network.

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 23H2 for ARM64-based Systems

Fixed versions10.0.26100.33650, 10.0.26200.9711, 10.0.22631.7652, 10.0.26100.9711

Vendor guidance

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

CVE-2026-83855

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.

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