Microsoft Patch Tuesday for September 2026 — Snort rules and prominent vulnerabilities

Microsoft has released its monthly security update for September 2026, which includes 973 vulnerabilities affecting a range of products, including 113 that Microsoft marked as "critical."

Microsoft notes that 2 of the vulnerabilities disclosed this month have been exploited in the wild:

CVE-2026-81963 affects Windows Update Stack. CVE-2026-81963 is a elevation of privilege vulnerability associated with Improper Link Resolution Before File Access ('Link Following') and Improper Access Control and has a CVSS base score of 7.8.

CVE-2026-85880 affects Windows Advanced Local Procedure Call (ALPC). CVE-2026-85880 is a elevation of privilege vulnerability associated with Heap-based Buffer Overflow and Use of Uninitialized Resource and has a CVSS base score of 7.8.

Out of 113 "critical" vulnerabilities, 82 are remote code execution (RCE) vulnerabilities.

Microsoft considers exploitation of the following vulnerabilities more likely:

CVE-2026-69676 affects Windows Kerberos. CVE-2026-69676 is a remote code execution vulnerability associated with Authentication Bypass by Capture-replay and has a CVSS base score of 8.8.

CVE-2026-69852 affects Windows Routing and Remote Access Service (RRAS). CVE-2026-69852 is a remote code execution vulnerability associated with Heap-based Buffer Overflow and has a CVSS base score of 7.5.

CVE-2026-72957 affects Windows Deployment Services. CVE-2026-72957 is a remote code execution vulnerability associated with Heap-based Buffer Overflow and has a CVSS base score of 7.8.

CVE-2026-69854 affects Spring Cloud Azure. CVE-2026-69854 is a elevation of privilege vulnerability associated with Improper Authentication and has a CVSS base score of 9.0.

CVE-2026-83501 affects Windows Virtualization-Based Security (VBS). CVE-2026-83501 is a information disclosure vulnerability associated with Out-of-bounds Read and has a CVSS base score of 5.5.

CVE-2026-70585 affects Windows Services for NFS ONCRPC XDR Driver. CVE-2026-70585 is a remote code execution vulnerability associated with Use After Free and has a CVSS base score of 7.0.

CVE-2026-69730 affects Windows DNS Server. CVE-2026-69730 is a remote code execution vulnerability associated with Use After Free and has a CVSS base score of 9.8.

CVE-2026-69857 affects Azure Cosmos DB. CVE-2026-69857 is a spoofing vulnerability associated with Authorization Bypass Through User-Controlled Key and has a CVSS base score of 8.5.

Microsoft considers exploitation of the following vulnerabilities less likely:

CVE-2026-69845 and CVE-2026-72979 affect Windows DHCP Server. CVE-2026-69845 is a remote code execution vulnerability associated with Heap-based Buffer Overflow and Improper Input Validation and has a CVSS base score of 9.8. CVE-2026-72979 is a remote code execution vulnerability associated with Use After Free and has a CVSS base score of 9.8.

CVE-2026-58599 affects HEVC Video Extensions. CVE-2026-58599 is a remote code execution vulnerability associated with Heap-based Buffer Overflow and has a CVSS base score of 7.8.

CVE-2026-65772 affects Microsoft Dynamics 365 On-Premises. CVE-2026-65772 is a remote code execution vulnerability associated with Deserialization of Untrusted Data and has a CVSS base score of 8.8.

CVE-2026-66302 affects Skype for Business. CVE-2026-66302 is a remote code execution vulnerability associated with External Control of File Name or Path and has a CVSS base score of 9.8.

CVE-2026-67631, CVE-2026-65669, and CVE-2026-67378 affect Microsoft SQL Server. CVE-2026-67631 is a remote code execution vulnerability associated with Heap-based Buffer Overflow and has a CVSS base score of 8.8. CVE-2026-65669 is a elevation of privilege vulnerability associated with Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') and has a CVSS base score of 9.6. CVE-2026-67378 is a remote code execution vulnerability associated with Untrusted Pointer Dereference and has a CVSS base score of 8.5.

CVE-2026-69499, CVE-2026-70296, CVE-2026-73023, CVE-2026-77495, and CVE-2026-73013 affect Windows Imaging Component. CVE-2026-69499 is a remote code execution vulnerability associated with Integer Overflow or Wraparound and has a CVSS base score of 8.8. CVE-2026-70296 is a remote code execution vulnerability associated with Out-of-bounds Write and has a CVSS base score of 9.8. CVE-2026-73023 is a remote code execution vulnerability associated with Heap-based Buffer Overflow and has a CVSS base score of 8.8. CVE-2026-77495 is a remote code execution vulnerability associated with Heap-based Buffer Overflow and has a CVSS base score of 8.8. CVE-2026-73013 is a remote code execution vulnerability associated with Heap-based Buffer Overflow and has a CVSS base score of 8.8.

CVE-2026-69501, CVE-2026-83939, CVE-2026-69906, and CVE-2026-69846 affect Windows Secure Kernel Mode. CVE-2026-69501 is a elevation of privilege vulnerability associated with Untrusted Pointer Dereference and has a CVSS base score of 7.0. CVE-2026-83939 is a elevation of privilege vulnerability associated with Untrusted Pointer Dereference and has a CVSS base score of 8.2. CVE-2026-69906 is a elevation of privilege vulnerability associated with Heap-based Buffer Overflow and has a CVSS base score of 8.2. CVE-2026-69846 is a elevation of privilege vulnerability associated with Integer Overflow or Wraparound and has a CVSS base score of 8.2.

CVE-2026-69590 and CVE-2026-72959 affect Windows Routing and Remote Access Service (RRAS). CVE-2026-69590 is a remote code execution vulnerability associated with Heap-based Buffer Overflow and has a CVSS base score of 9.8. CVE-2026-72959 is a remote code execution vulnerability associated with Heap-based Buffer Overflow and has a CVSS base score of 8.8.

CVE-2026-69601 affects Microsoft Windows Media Foundation. CVE-2026-69601 is a remote code execution vulnerability associated with Heap-based Buffer Overflow and has a CVSS base score of 8.8.

CVE-2026-72981 affects IP Helper. CVE-2026-72981 is a remote code execution vulnerability associated with Use After Free and has a CVSS base score of 8.1.

CVE-2026-73006 affects DirectWrite. CVE-2026-73006 is a remote code execution vulnerability associated with Stack-based Buffer Overflow and has a CVSS base score of 8.8.

CVE-2026-73009 affects Windows Secure Socket Tunneling Protocol (SSTP). CVE-2026-73009 is a remote code execution vulnerability associated with Use After Free and has a CVSS base score of 9.8.

CVE-2026-73010 and CVE-2026-78444 affect Microsoft Failover Cluster. CVE-2026-73010 is a remote code execution vulnerability associated with Use After Free and has a CVSS base score of 9.8. CVE-2026-78444 is a remote code execution vulnerability associated with Untrusted Pointer Dereference and has a CVSS base score of 8.1.

CVE-2026-73017 affects Graphics Kernel. CVE-2026-73017 is a remote code execution vulnerability associated with Heap-based Buffer Overflow and has a CVSS base score of 7.5.

CVE-2026-77493 affects Windows Graphics Component. CVE-2026-77493 is a remote code execution vulnerability associated with Double Free and has a CVSS base score of 9.8.

CVE-2026-83498 affects Windows Virtualization-Based Security (VBS) Enclave. CVE-2026-83498 is a elevation of privilege vulnerability associated with Untrusted Pointer Dereference and has a CVSS base score of 7.8.

CVE-2026-69530, CVE-2026-78449, and CVE-2026-78450 affect Windows Reliable Multicast Transport Driver (RMCAST). CVE-2026-69530 is a remote code execution vulnerability associated with Use After Free and has a CVSS base score of 8.1. CVE-2026-78449 is a remote code execution vulnerability associated with Use After Free and has a CVSS base score of 8.1. CVE-2026-78450 is a remote code execution vulnerability associated with Use After Free and has a CVSS base score of 8.1.

CVE-2026-81948, CVE-2026-81950, CVE-2026-81951, CVE-2026-81959, and CVE-2026-81953 affect Microsoft Excel. CVE-2026-81948 is a remote code execution vulnerability associated with Heap-based Buffer Overflow and has a CVSS base score of 7.8. CVE-2026-81950 is a remote code execution vulnerability associated with Double Free and has a CVSS base score of 7.8. CVE-2026-81951 is a remote code execution vulnerability associated with Heap-based Buffer Overflow and has a CVSS base score of 7.8. CVE-2026-81959 is a remote code execution vulnerability associated with Heap-based Buffer Overflow and Integer Overflow or Wraparound and has a CVSS base score of 7.8. CVE-2026-81953 is a remote code execution vulnerability associated with Stack-based Buffer Overflow and has a CVSS base score of 7.8.

CVE-2026-81354 affects Windows Hello. CVE-2026-81354 is a elevation of privilege vulnerability associated with Heap-based Buffer Overflow and has a CVSS base score of 8.2.

CVE-2026-78525, CVE-2026-78520, CVE-2026-78519, and CVE-2026-78509 affect Microsoft Office Outlook. CVE-2026-78525 is a remote code execution vulnerability associated with Use After Free and has a CVSS base score of 8.8. CVE-2026-78520 is a remote code execution vulnerability associated with Out-of-bounds Read and has a CVSS base score of 6.5. CVE-2026-78519 is a remote code execution vulnerability associated with Use of Uninitialized Resource and has a CVSS base score of 8.8. CVE-2026-78509 is a remote code execution vulnerability associated with Heap-based Buffer Overflow and has a CVSS base score of 9.8.

CVE-2026-81952 and CVE-2026-78510 affect Microsoft Word. CVE-2026-81952 is a remote code execution vulnerability associated with Heap-based Buffer Overflow and has a CVSS base score of 8.8. CVE-2026-78510 is a remote code execution vulnerability associated with Heap-based Buffer Overflow and has a CVSS base score of 9.8.

CVE-2026-69595 and CVE-2026-78445 affect Windows Services for NFS ONCRPC XDR Driver. CVE-2026-69595 is a remote code execution vulnerability associated with Use After Free and has a CVSS base score of 9.8. CVE-2026-78445 is a remote code execution vulnerability associated with Use After Free and has a CVSS base score of 9.8.

CVE-2026-73018 and CVE-2026-72986 affect Graphic Fonts. CVE-2026-73018 is a remote code execution vulnerability associated with Heap-based Buffer Overflow and has a CVSS base score of 8.8. CVE-2026-72986 is a remote code execution vulnerability associated with Heap-based Buffer Overflow and Integer Overflow or Wraparound and has a CVSS base score of 8.8.

CVE-2026-70203 affects Windows Media Player. CVE-2026-70203 is a remote code execution vulnerability associated with Heap-based Buffer Overflow and has a CVSS base score of 8.8.

CVE-2026-69632, CVE-2026-77898, CVE-2026-69285, and CVE-2026-78505 affect Microsoft Office. CVE-2026-69632 is a remote code execution vulnerability associated with Use After Free and has a CVSS base score of 8.8. CVE-2026-77898 is a remote code execution vulnerability associated with Heap-based Buffer Overflow and has a CVSS base score of 7.5. CVE-2026-69285 is a remote code execution vulnerability associated with Heap-based Buffer Overflow and has a CVSS base score of 8.8. CVE-2026-78505 is a remote code execution vulnerability associated with Heap-based Buffer Overflow and has a CVSS base score of 8.8.

CVE-2026-69813 and CVE-2026-77505 affect Windows DNS Server. CVE-2026-69813 is a remote code execution vulnerability associated with Use After Free and has a CVSS base score of 8.1. CVE-2026-77505 is a remote code execution vulnerability associated with Use After Free and has a CVSS base score of 8.1.

CVE-2026-78439 affects Microsoft Office Graphics Component. CVE-2026-78439 is a remote code execution vulnerability associated with Stack-based Buffer Overflow and has a CVSS base score of 8.8.

CVE-2026-81355 affects Virtual Hard Disk (VHD) Miniport Driver. CVE-2026-81355 is a remote code execution vulnerability associated with Heap-based Buffer Overflow and has a CVSS base score of 7.5.

CVE-2026-77504 affects Microsoft Office Word. CVE-2026-77504 is a remote code execution vulnerability associated with Double Free and has a CVSS base score of 8.8.

CVE-2026-69649 affects Raw Image Extension. CVE-2026-69649 is a remote code execution vulnerability associated with Heap-based Buffer Overflow and has a CVSS base score of 8.8.

CVE-2026-69797, CVE-2026-69767, and CVE-2026-69678 affect Microsoft Office PowerPoint. CVE-2026-69797 is a remote code execution vulnerability associated with Use After Free and has a CVSS base score of 8.8. CVE-2026-69767 is a remote code execution vulnerability associated with Use After Free and has a CVSS base score of 8.8. CVE-2026-69678 is a remote code execution vulnerability associated with Use After Free and has a CVSS base score of 8.8.

CVE-2026-72983 affects Internet Connection Sharing (ICS). CVE-2026-72983 is a remote code execution vulnerability associated with Use After Free and has a CVSS base score of 9.8.

CVE-2026-69518 affects Windows Remote Desktop. CVE-2026-69518 is a remote code execution vulnerability associated with Heap-based Buffer Overflow and has a CVSS base score of 8.8.

CVE-2026-69712 affects Windows Key Distribution Center. CVE-2026-69712 is a remote code execution vulnerability associated with Use After Free and has a CVSS base score of 8.8.

Microsoft considers exploitation of the following vulnerabilities unlikely:

CVE-2026-69603, CVE-2026-72961, and CVE-2026-80083 affect Windows Hyper-V. CVE-2026-69603 is a remote code execution vulnerability associated with Heap-based Buffer Overflow and has a CVSS base score of 8.8. CVE-2026-72961 is a elevation of privilege vulnerability associated with Heap-based Buffer Overflow and has a CVSS base score of 8.2. CVE-2026-80083 is a remote code execution vulnerability associated with Untrusted Pointer Dereference and has a CVSS base score of 8.8.

CVE-2026-69710, CVE-2026-69725, CVE-2026-69740, CVE-2026-69784, CVE-2026-69799, CVE-2026-69820, CVE-2026-69864, and CVE-2026-72980 affect Windows Hello. CVE-2026-69710 is a elevation of privilege vulnerability associated with Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') and has a CVSS base score of 7.5. CVE-2026-69725 is a elevation of privilege vulnerability associated with Double Free and has a CVSS base score of 7.8. CVE-2026-69740 is a elevation of privilege vulnerability associated with Use After Free and has a CVSS base score of 8.8. CVE-2026-69784 is a elevation of privilege vulnerability associated with Use After Free and has a CVSS base score of 8.8. CVE-2026-69799 is a elevation of privilege vulnerability associated with Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') and has a CVSS base score of 7.8. CVE-2026-69820 is a elevation of privilege vulnerability associated with Heap-based Buffer Overflow and has a CVSS base score of 8.2. CVE-2026-69864 is a elevation of privilege vulnerability associated with Use After Free and has a CVSS base score of 7.8. CVE-2026-72980 is a security feature bypass vulnerability associated with Uncontrolled Search Path Element and has a CVSS base score of 4.4.

CVE-2026-69769 affects Windows HTTP Print Provider. CVE-2026-69769 is a remote code execution vulnerability associated with Heap-based Buffer Overflow and has a CVSS base score of 9.8.

CVE-2026-69829 affects Windows Shell. CVE-2026-69829 is a remote code execution vulnerability associated with Heap-based Buffer Overflow and has a CVSS base score of 9.8.

CVE-2026-69860 affects Windows Imaging Component. CVE-2026-69860 is a remote code execution vulnerability associated with Heap-based Buffer Overflow and has a CVSS base score of 8.8.

CVE-2026-69874 affects Windows ALPC. CVE-2026-69874 is a elevation of privilege vulnerability associated with Untrusted Pointer Dereference and has a CVSS base score of 8.2.

CVE-2026-69890 affects Windows Virtual Trusted Platform Module. CVE-2026-69890 is a elevation of privilege vulnerability associated with Use After Free and has a CVSS base score of 7.5.

CVE-2026-70586 affects Windows Paint. CVE-2026-70586 is a remote code execution vulnerability associated with Heap-based Buffer Overflow and has a CVSS base score of 8.8.

CVE-2026-72950 affects Windows Routing and Remote Access Service (RRAS). CVE-2026-72950 is a remote code execution vulnerability associated with Heap-based Buffer Overflow and has a CVSS base score of 8.8.

CVE-2026-72954 affects Windows Deployment Services. CVE-2026-72954 is a remote code execution vulnerability associated with Use After Free and has a CVSS base score of 7.5.

CVE-2026-72958 affects Windows Credential Guard. CVE-2026-72958 is a elevation of privilege vulnerability associated with Double Free and has a CVSS base score of 8.2.

CVE-2026-72960 affects Windows Media Player. CVE-2026-72960 is a remote code execution vulnerability associated with Heap-based Buffer Overflow and has a CVSS base score of 8.8.

CVE-2026-72962 affects Windows USB Video Driver. CVE-2026-72962 is a elevation of privilege vulnerability associated with Heap-based Buffer Overflow and has a CVSS base score of 8.2.

CVE-2026-72982 affects Windows Netlogon. CVE-2026-72982 is a remote code execution vulnerability associated with Stack-based Buffer Overflow and has a CVSS base score of 9.8.

CVE-2026-72987 affects Windows DNS. CVE-2026-72987 is a remote code execution vulnerability associated with Use After Free and has a CVSS base score of 8.1.

CVE-2026-81949 affects Microsoft Excel. CVE-2026-81949 is a remote code execution vulnerability associated with Integer Overflow or Wraparound and has a CVSS base score of 7.8.

CVE-2026-81352 affects Web Media Extensions. CVE-2026-81352 is a remote code execution vulnerability associated with Heap-based Buffer Overflow and has a CVSS base score of 8.8.

CVE-2026-81955 affects Windows Graphics Component. CVE-2026-81955 is a remote code execution vulnerability associated with Heap-based Buffer Overflow and has a CVSS base score of 8.8.

CVE-2026-69858 and CVE-2026-69827 affect Windows DNS Server. CVE-2026-69858 is a remote code execution vulnerability associated with Use After Free and has a CVSS base score of 8.1. CVE-2026-69827 is a remote code execution vulnerability associated with Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') and Use After Free and has a CVSS base score of 8.1.

CVE-2026-67643 and CVE-2026-67636 affect Microsoft SQL Server. CVE-2026-67643 is a remote code execution vulnerability associated with Heap-based Buffer Overflow and has a CVSS base score of 8.8. CVE-2026-67636 is a remote code execution vulnerability associated with Out-of-bounds Read and has a CVSS base score of 8.5.

CVE-2026-69579 affects Windows Message Queuing. CVE-2026-69579 is a remote code execution vulnerability associated with Use After Free and has a CVSS base score of 9.8.

CVE-2026-70351 affects Microsoft WebP Image Extension. CVE-2026-70351 is a remote code execution vulnerability associated with Integer Overflow or Wraparound and Heap-based Buffer Overflow and has a CVSS base score of 8.8.

Other critical vulnerabilities:

CVE-2026-62916 affects Microsoft Entra ID. CVE-2026-62916 is a elevation of privilege vulnerability associated with Authentication Bypass Using an Alternate Path or Channel and has a CVSS base score of 9.1.

CVE-2026-83941 affects Entra ID. CVE-2026-83941 is a elevation of privilege vulnerability associated with Missing Authorization and has a CVSS base score of 9.9.

CVE-2026-65818 affects Power Automate. CVE-2026-65818 is a elevation of privilege vulnerability associated with Server-Side Request Forgery (SSRF) and has a CVSS base score of 8.5.

CVE-2026-80098 affects Copilot Studio. CVE-2026-80098 is a elevation of privilege vulnerability associated with Improper Verification of Cryptographic Signature and has a CVSS base score of 9.3.

CVE-2026-83711 affects Microsoft Azure Active Directory B2C. CVE-2026-83711 is a elevation of privilege vulnerability associated with Authorization Bypass Through User-Controlled Key and has a CVSS base score of 10.0.

CVE-2026-70178 affects Microsoft Fabric. CVE-2026-70178 is a elevation of privilege vulnerability associated with Missing Authorization and has a CVSS base score of 8.5.

CVE-2026-70352 affects Azure AI Language. CVE-2026-70352 is a elevation of privilege vulnerability associated with Missing Authentication for Critical Function and has a CVSS base score of 10.0.

CVE-2026-62906 affects Microsoft Discovery Studio. CVE-2026-62906 is a information disclosure vulnerability associated with Improper Neutralization of Special Elements in Data Query Logic and has a CVSS base score of 7.4.

Talos would also like to highlight the following "important" vulnerabilities as Microsoft has determined that their exploitation is "more likely:"

CVE-2026-68846: Windows Kernel Elevation of Privilege Vulnerability

CVE-2026-68876: Windows Program Compatibility Assistant Service Elevation of Privilege Vulnerability

CVE-2026-68880: Windows Win32k Elevation of Privilege Vulnerability

CVE-2026-68884: Windows Kernel Elevation of Privilege Vulnerability

CVE-2026-69274: Windows Win32k Elevation of Privilege Vulnerability

CVE-2026-69277: Microsoft Local Security Authority (LSA) Server Elevation of Privilege Vulnerability

CVE-2026-69301: Windows Win32k Elevation of Privilege Vulnerability

CVE-2026-69305: Microsoft Windows Search Component Elevation of Privilege Vulnerability

CVE-2026-69310: Windows DNS Elevation of Privilege Vulnerability

CVE-2026-69337: Windows Registry Elevation of Privilege Vulnerability

CVE-2026-69364: Windows Print Spooler Components Elevation of Privilege Vulnerability

CVE-2026-69385: Windows TCP/IP Elevation of Privilege Vulnerability

CVE-2026-69391: Windows Broker Infrastructure Service Elevation of Privilege Vulnerability

CVE-2026-69406: Windows Kernel Information Disclosure Vulnerability

CVE-2026-69436: Windows Error Reporting Elevation of Privilege Vulnerability

CVE-2026-69450: Windows Error Reporting Elevation of Privilege Vulnerability

CVE-2026-69451: Windows Management Instrumentation Elevation of Privilege Vulnerability

CVE-2026-69459: Windows Power Dependency Coordinator Elevation of Privilege Vulnerability

CVE-2026-69466: Windows Kernel Elevation of Privilege Vulnerability

CVE-2026-69473: Windows Kernel Elevation of Privilege Vulnerability

CVE-2026-69478: Windows Device Association Service Elevation of Privilege Vulnerability

CVE-2026-69498: Windows Win32k Elevation of Privilege Vulnerability

CVE-2026-69525: Remote Desktop Services Remote Code Execution Vulnerability

CVE-2026-69541: Virtual Hard Disk (VHD) Miniport Driver Elevation of Privilege Vulernability

CVE-2026-69585: Microsoft Windows Search Component Elevation of Privilege Vulnerability

CVE-2026-69600: Microsoft Windows Search Component Elevation of Privilege Vulnerability

CVE-2026-69605: Microsoft Install Service Elevation of Privilege Vulnerability

CVE-2026-69623: Windows HTTP Print Provider Remote Code Execution Vulnerability

CVE-2026-69714: Windows Device Association Service Elevation of Privilege Vulnerability

CVE-2026-69723: Windows Kernel Information Disclosure Vulnerability

CVE-2026-69757: Windows TCP/IP Elevation of Privilege Vulnerability

CVE-2026-69777: Windows DHCP Client Elevation of Privilege Vulnerability

CVE-2026-69779: Windows Win32k Elevation of Privilege Vulnerability

CVE-2026-69832: Win32k Information Disclosure Vulnerability

CVE-2026-69911: Microsoft Windows Search Component Elevation of Privilege Vulnerability

CVE-2026-69921: Windows Print Spooler Components Elevation of Privilege Vulnerability

CVE-2026-70289: Windows Win32k Elevation of Privilege Vulnerability

CVE-2026-70342: Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability

CVE-2026-70562: Windows Audio Service Elevation of Privilege Vulnerability

CVE-2026-70583: Windows Core Messaging Elevation of Privilege Vulnerability

CVE-2026-71340: Windows File History Service Elevation of Privilege Vulnerability

CVE-2026-72936: Windows SMB Client Remote Code Execution Vulnerability

CVE-2026-77500: Windows Device Association Service Elevation of Privilege Vulnerability

CVE-2026-78454: Windows CD-ROM Driver Information Disclosure Vulnerability

CVE-2026-69460: Windows Modern Device Management (MDM) Elevation of Privilege Vulnerability

CVE-2026-69467: Microsoft Graphics Component Elevation of Privilege Vulnerability

CVE-2026-80093: Windows Cloud Files Mini Filter Driver Elevation of Privilege Vulnerability

CVE-2026-72940: Windows Schannel Remote Code Execution Vulnerability

CVE-2026-71343: Windows Remote Access Connection Manager Remote Code Execution Vulnerability

CVE-2026-69366: Windows Kernel Elevation of Privilege Vulnerability

A complete list of all the other vulnerabilities Microsoft disclosed this month is available on its update page.

In response to these vulnerability disclosures, Talos is releasing a new Snort ruleset that detects attempts to exploit some of them. Please note that additional rules may be released at a future date, and current rules are subject to change pending additional information. Cisco Secure Firewall customers should use the latest update to their ruleset by updating their SRU. Open-source Snort Subscriber Ruleset customers can stay up to date by downloading the latest rule pack available for purchase on Snort.org.

Snort 2 rule coverage: SIDs 67011-67032 and 67036-67084.

Snort 3 rule coverage: SIDs 301619-301629, 301632-301655, and 67046.