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Microsoft Patch Tuesday, October 2026: the CVEs, page 9

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Microsoft Patch Tuesday October 2026: the CVEs Microsoft published on 13 October 2026, the second Tuesday of the month, with CVSS, EPSS, CISA KEV and public exploits to show what to patch first. Narrow it: in CISA KEV · critical. The same day: Adobe, SAP. Earlier: Sep 2026, Aug 2026, Jul 2026, Jun 2026, May 2026, Apr 2026, Mar 2026, Feb 2026, Jan 2026, Dec 2025, Nov 2025, Oct 2025. Other lists: CISA KEV list, CVE exploit search, Latest critical CVEs, Ransomware CVEs, New CVEs today, This week, Patch Tuesday

  1. 7.8CVE-2026-83692EPSS 0.4%

    Heap-based buffer overflow in Windows Bind Filter Driver allows an authorized attacker to elevate privileges locally.

  2. 7.8CVE-2026-83691EPSS 0.4%

    Heap-based buffer overflow in Windows DHCP Server allows an authorized attacker to elevate privileges locally.

  3. 7.8CVE-2026-83690EPSS 0.4%

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

  4. 7.0CVE-2026-83689EPSS 0.3%

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

  5. 8.8CVE-2026-83688EPSS 0.9%

    Heap-based buffer overflow in Remote Desktop Client allows an unauthorized attacker to execute code over a network.

  6. 7.0CVE-2026-83687EPSS 0.3%

    Use after free in Windows Connected User Experiences and Telemetry allows an authorized attacker to elevate privileges locally.

  7. 5.5CVE-2026-83686EPSS 0.5%

    Out-of-bounds read in Microsoft Windows Search Component allows an authorized attacker to disclose information locally.

  8. 6.5CVE-2026-83685EPSS 1.3%

    Buffer over-read in Windows IKE Extension allows an authorized attacker to deny service over a network.

  9. 6.5CVE-2026-83683EPSS 1.3%

    Absolute path traversal in Windows Encrypting File System (EFS) allows an authorized attacker to disclose information over a network.

  10. 7.0CVE-2026-83682EPSS 0.3%

    Use after free in Windows TCP/IP allows an authorized attacker to elevate privileges locally.

  11. 5.5CVE-2026-83681EPSS 0.4%

    Weak authentication in Microsoft PowerToys allows an authorized attacker to perform tampering locally.

  12. 7.0CVE-2026-83680EPSS 0.3%

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

  13. 7.8CVE-2026-83679EPSS 0.4%

    Use after free in Windows Defender Firewall Service allows an authorized attacker to elevate privileges locally.

  14. 7.8CVE-2026-83678EPSS 0.4%

    Heap-based buffer overflow in Windows TCP/IP allows an authorized attacker to elevate privileges locally.

  15. 7.5CVE-2026-83677EPSS 1.1%

    Missing release of memory after effective lifetime in Windows DHCP Client allows an unauthorized attacker to deny service over a network.

  16. 7.0CVE-2026-83676EPSS 0.3%

    Integer underflow (wrap or wraparound) in Windows Installer allows an authorized attacker to elevate privileges locally.

  17. 7.0CVE-2026-83675EPSS 0.3%

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

  18. 8.1CVE-2026-83674EPSS 0.7%

    Weak authentication in Active Directory Federation Services (AD FS) allows an unauthorized attacker to perform spoofing over a network.

  19. 4.7CVE-2026-83672EPSS 0.7%

    Exposure of sensitive system information to an unauthorized control sphere in Windows Installer allows an authorized attacker to disclose information locally.

  20. 6.5CVE-2026-83671EPSS 0.5%

    Out-of-bounds read in Windows Hyper-V allows an authorized attacker to disclose information locally.

  21. 7.5CVE-2026-83670EPSS 1.1%

    Out-of-bounds read in Function Discovery Service (fdwsd.dll) allows an unauthorized attacker to disclose information over a network.

  22. 7.8CVE-2026-83669EPSS 0.4%

    Use of uninitialized resource in Windows Error Reporting allows an authorized attacker to elevate privileges locally.

  23. 5.5CVE-2026-83668EPSS 0.4%

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

  24. 6.5CVE-2026-83667EPSS 1.2%

    Out-of-bounds read in Active Directory Domain Services allows an authorized attacker to deny service over a network.

  25. 7.0CVE-2026-83666EPSS 0.2%

    Concurrent execution using shared resource with improper synchronization ('race condition') in Active Directory Certificate Services (AD CS) allows an authorized attacker to elevate privileges locally.

  26. 7.5CVE-2026-83665EPSS 1.3%

    Null pointer dereference in Windows DHCP Server allows an unauthorized attacker to deny service over a network.

  27. 5.5CVE-2026-83664EPSS 0.4%

    Access of resource using incompatible type ('type confusion') in Windows Portable Device File System Driver allows an authorized attacker to disclose information locally.

  28. 7.8CVE-2026-83659EPSS 0.3%

    Improper link resolution before file access ('link following') in Windows User Profile Service allows an authorized attacker to elevate privileges locally.

  29. 5.5CVE-2026-83658EPSS 0.3%

    Improper access control in Windows Error Reporting allows an authorized attacker to disclose information locally.

  30. 5.5CVE-2026-83657EPSS 0.3%

    Weak authentication in Windows Modern Device Management (MDM) allows an authorized attacker to perform tampering locally.

  31. 4.7CVE-2026-83656EPSS 0.3%

    Missing authentication for critical function in Windows Modern Device Management (MDM) allows an authorized attacker to perform tampering locally.

  32. 7.5CVE-2026-83655EPSS 1.3%

    Out-of-bounds read in Network Policy Server (NPS) allows an unauthorized attacker to deny service over a network.

  33. 7.8CVE-2026-83654EPSS 0.3%

    Missing authentication for critical function in Windows Modern Device Management (MDM) allows an authorized attacker to elevate privileges locally.

  34. 7.8CVE-2026-83652EPSS 0.4%

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

  35. 7.5CVE-2026-83651EPSS 1.0%

    Out-of-bounds read in Windows GDI allows an unauthorized attacker to disclose information over a network.

  36. 7.8CVE-2026-83650EPSS 0.4%

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

  37. 6.5CVE-2026-83649EPSS 1.2%

    Out-of-bounds read in Windows Local Security Authority Subsystem Service (LSASS) allows an authorized attacker to deny service over a network.

  38. 6.5CVE-2026-83648EPSS 1.2%

    Null pointer dereference in Active Directory Domain Services allows an authorized attacker to deny service over a network.

  39. 7.5CVE-2026-83647EPSS 1.3%

    Out-of-bounds read in Active Directory Domain Services allows an unauthorized attacker to deny service over a network.

  40. 5.4CVE-2026-83646EPSS 0.4%

    Url redirection to untrusted site ('open redirect') in Active Directory Federation Services (AD FS) allows an authorized attacker to perform spoofing over a network.

  41. 7.5CVE-2026-83645EPSS 1.2%

    Allocation of resources without limits or throttling in Active Directory Federation Services (AD FS) allows an unauthorized attacker to deny service over a network.

  42. 7.0CVE-2026-83644EPSS 0.3%

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

  43. 8.8CVE-2026-83643EPSS 0.9%

    Stack-based buffer overflow in Windows Error Reporting allows an unauthorized attacker to execute code over a network.

  44. 8.8CVE-2026-83642EPSS 0.9%

    Access of resource using incompatible type ('type confusion') in DNS Server allows an unauthorized attacker to execute code over a network.

  45. 7.8CVE-2026-83641EPSS 0.4%

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

  46. 7.8CVE-2026-83640EPSS 0.4%

    Heap-based buffer overflow in Windows NTFS allows an authorized attacker to execute code locally.

  47. 7.8CVE-2026-83639EPSS 0.4%

    Heap-based buffer overflow in Windows Sensor Data Service allows an authorized attacker to elevate privileges locally.

  48. 7.8CVE-2026-83638EPSS 0.4%

    Heap-based buffer overflow in Windows USB Driver allows an authorized attacker to elevate privileges locally.

  49. 7.8CVE-2026-83637EPSS 0.4%

    Out-of-bounds read in Windows Kernel-Mode Drivers allows an authorized attacker to elevate privileges locally.

  50. 6.5CVE-2026-83636EPSS 0.4%

    Null pointer dereference in Windows Hyper-V allows an authorized attacker to deny service locally.

  51. 7.5CVE-2026-83635EPSS 1.3%

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

  52. 7.8CVE-2026-83634EPSS 0.4%

    Double free in Windows BitLocker allows an authorized attacker to elevate privileges locally.

  53. 7.8CVE-2026-83588EPSS 0.4%

    Heap-based buffer overflow in Windows USB Driver allows an authorized attacker to elevate privileges locally.

  54. 7.8CVE-2026-83587EPSS 0.4%

    Untrusted pointer dereference in Windows Core Messaging allows an authorized attacker to elevate privileges locally.

  55. 7.8CVE-2026-83586EPSS 0.3%

    Weak authentication in Windows Resilient File System (ReFS) Deduplication Service allows an authorized attacker to elevate privileges locally.

  56. 7.8CVE-2026-83585EPSS 0.4%

    Use of externally-controlled format string in Windows NTFS allows an authorized attacker to elevate privileges locally.

  57. 7.0CVE-2026-83584EPSS 0.3%

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

  58. 7.8CVE-2026-83583EPSS 0.3%

    Improper access control in Windows Geotag Broker allows an authorized attacker to elevate privileges locally.

  59. 4.7CVE-2026-83582EPSS 0.4%

    Use after free in Windows Graphics Kernel allows an authorized attacker to disclose information locally.

  60. 7.0CVE-2026-83580EPSS 0.3%

    Heap-based buffer overflow in Windows Client-Side Caching (CSC) Service allows an authorized attacker to elevate privileges locally.

  61. 7.8CVE-2026-83579EPSS 0.4%

    Heap-based buffer overflow in Windows Smart Card allows an authorized attacker to elevate privileges locally.

  62. 9.8CVE-2026-83578EPSS 1.1%

    Integer underflow (wrap or wraparound) in Windows PowerShell allows an unauthorized attacker to execute code over a network.

  63. 7.0CVE-2026-83575EPSS 0.3%

    Use after free in Microsoft Windows Search Component allows an authorized attacker to elevate privileges locally.

  64. 7.0CVE-2026-83574EPSS 0.3%

    Use after free in Microsoft Windows Search Component allows an authorized attacker to elevate privileges locally.

  65. 6.8CVE-2026-83573EPSS 0.5%

    Integer overflow or wraparound in Windows Kernel Mode Driver allows an unauthorized attacker to elevate privileges with a physical attack.

  66. 5.5CVE-2026-83571EPSS 0.5%

    Null pointer dereference in Windows Audio Service allows an authorized attacker to disclose information locally.

  67. 7.8CVE-2026-83570EPSS 0.4%

    Use after free in Microsoft Windows Search Component allows an authorized attacker to elevate privileges locally.

  68. 7.8CVE-2026-83569EPSS 0.4%

    Heap-based buffer overflow in HID Parser Library allows an authorized attacker to elevate privileges locally.

  69. 7.8CVE-2026-83568EPSS 0.3%

    Improper access control in Windows Kernel-Mode Drivers allows an authorized attacker to elevate privileges locally.

  70. 7.8CVE-2026-83567EPSS 0.4%

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

  71. 7.0CVE-2026-83566EPSS 0.3%

    Use after free in Windows Win32K - ICOMP allows an authorized attacker to elevate privileges locally.

  72. 5.5CVE-2026-83565EPSS 0.5%

    Buffer over-read in Windows Encrypting File System (EFS) allows an authorized attacker to disclose information locally.

  73. 7.0CVE-2026-83564EPSS 0.3%

    Use after free in Microsoft Windows Search Component allows an authorized attacker to elevate privileges locally.

  74. 9.8CVE-2026-83523EPSS 0.9%

    Heap-based buffer overflow in Windows Image Acquisition allows an unauthorized attacker to execute code over a network.

  75. 8.1CVE-2026-83522EPSS 0.8%

    Reliance on untrusted inputs in a security decision in Windows IKE Extension allows an unauthorized attacker to perform spoofing over a network.

  76. 6.5CVE-2026-83521EPSS 1.1%

    Out-of-bounds read in Windows IKE Extension allows an authorized attacker to disclose information over a network.

  77. 8.8CVE-2026-83520EPSS 1.4%

    Deserialization of untrusted data in .NET allows an unauthorized attacker to execute code over a network.

  78. 9.8CVE-2026-83519EPSS 1.1%

    Heap-based buffer overflow in Windows Error Reporting allows an unauthorized attacker to execute code over a network.

  79. 7.8CVE-2026-83518EPSS 0.4%

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

  80. 9.8CVE-2026-83517EPSS 1.1%

    Heap-based buffer overflow in Microsoft Windows Media Foundation allows an unauthorized attacker to execute code over a network.

  81. 7.5CVE-2026-83516EPSS 1.3%

    Out-of-bounds read in Windows Local Security Authority Subsystem Service (LSASS) allows an unauthorized attacker to deny service over a network.

  82. 7.5CVE-2026-83515EPSS 1.0%

    Use of uninitialized resource in RPC Runtime allows an unauthorized attacker to disclose information over a network.

  83. 7.8CVE-2026-83514EPSS 0.4%

    Heap-based buffer overflow in Windows Partition Management Driver allows an authorized attacker to elevate privileges locally.

  84. 7.8CVE-2026-83513EPSS 0.4%

    Use after free in Windows Universal Disk Format File System Driver (UDFS) allows an authorized attacker to elevate privileges locally.

  85. 7.4CVE-2026-83511EPSS 0.7%

    Weak authentication in Active Directory Federation Services (AD FS) allows an unauthorized attacker to perform spoofing over a network.

  86. 7.0CVE-2026-83510EPSS 0.2%

    Time-of-check time-of-use (toctou) race condition in Windows Setup Files Cleanup allows an authorized attacker to elevate privileges locally.

  87. 7.0CVE-2026-83509EPSS 0.4%

    Untrusted search path in Windows Setup Files Cleanup allows an authorized attacker to elevate privileges locally.

  88. 7.8CVE-2026-83508EPSS 0.4%

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

  89. 5.5CVE-2026-83507EPSS 0.5%

    Improper link resolution before file access ('link following') in Windows Update Orchestrator Service allows an authorized attacker to disclose information locally.

  90. 7.8CVE-2026-83506EPSS 0.4%

    Untrusted search path in Servicing Stack Updates allows an authorized attacker to elevate privileges locally.

  91. 7.0CVE-2026-83505EPSS 0.3%

    Time-of-check time-of-use (toctou) race condition in Windows Setup Files Cleanup allows an authorized attacker to elevate privileges locally.

  92. 4.7CVE-2026-83504EPSS 0.3%

    Time-of-check time-of-use (toctou) race condition in Windows SmartScreen allows an authorized attacker to disclose information locally.

  93. 6.1CVE-2026-83500EPSS 0.4%

    Url redirection to untrusted site ('open redirect') in Windows BitLocker allows an unauthorized attacker to bypass a security feature with a physical attack.

  94. 7.8CVE-2026-83499EPSS 0.3%

    Insufficient granularity of access control in Windows Server Update Service allows an authorized attacker to elevate privileges locally.

  95. 7.0CVE-2026-81971EPSS 0.2%

    Concurrent execution using shared resource with improper synchronization ('race condition') in Windows NTFS allows an authorized attacker to elevate privileges locally.

  96. 7.8CVE-2026-81969EPSS 0.3%

    Insufficient granularity of access control in Windows Server Update Service allows an authorized attacker to elevate privileges locally.

  97. 5.5CVE-2026-81964EPSS 0.3%

    Use of hard-coded credentials in Windows Update Orchestrator Service allows an authorized attacker to bypass a security feature locally.

  98. 7.8CVE-2026-78459EPSS 0.4%

    Heap-based buffer overflow in Windows Internet Information Services allows an authorized attacker to elevate privileges locally.

  99. 8.8CVE-2026-77910EPSS 0.9%

    Incorrect authorization in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network.

  100. 8.8CVE-2026-77902EPSS 0.9%

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