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Microsoft Patch Tuesday, October 2026: the CVEs, page 7

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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. 9.8CVE-2026-83935EPSS 0.9%

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

  2. 8.8CVE-2026-83934EPSS 0.9%

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

  3. 5.5CVE-2026-83933EPSS 0.5%

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

  4. 7.8CVE-2026-83932EPSS 0.3%

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

  5. 7.8CVE-2026-83931EPSS 0.3%

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

  6. 7.0CVE-2026-83930EPSS 0.3%

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

  7. 8.8CVE-2026-83929EPSS 0.6%

    Out-of-bounds write in Windows GDI allows an unauthorized attacker to execute code over a network.

  8. 8.8CVE-2026-83928EPSS 0.6%

    Out-of-bounds write in Windows Local Security Authority Subsystem Service (LSASS) allows an unauthorized attacker to execute code over a network.

  9. 7.8CVE-2026-83927EPSS 0.4%

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

  10. 4.4CVE-2026-83926EPSS 0.4%

    Improper certificate validation in Windows Hello allows an authorized attacker to bypass a security feature locally.

  11. 4.7CVE-2026-83925EPSS 0.7%

    Use of uninitialized resource in Windows Kernel allows an authorized attacker to disclose information locally.

  12. 7.0CVE-2026-83924EPSS 0.3%

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

  13. 8.8CVE-2026-83923EPSS 1.0%

    Relative path traversal in OpenSSH for Windows allows an unauthorized attacker to execute code over a network.

  14. 7.8CVE-2026-83922EPSS 0.3%

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

  15. 7.0CVE-2026-83921EPSS 0.3%

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

  16. 7.8CVE-2026-83920EPSS 0.3%

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

  17. 7.8CVE-2026-83919EPSS 0.3%

    Heap-based buffer overflow in Microsoft Internet Messaging API allows an authorized attacker to execute code locally.

  18. 7.8CVE-2026-83918EPSS 0.3%

    Integer overflow or wraparound in Windows Kernel allows an authorized attacker to elevate privileges locally.

  19. 7.0CVE-2026-83917EPSS 0.3%

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

  20. 7.0CVE-2026-83916EPSS 0.3%

    Double free in Windows Error Reporting allows an authorized attacker to execute code locally.

  21. 7.0CVE-2026-83915EPSS 0.3%

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

  22. 8.1CVE-2026-83914EPSS 0.8%

    Use after free in Microsoft XML allows an unauthorized attacker to execute code over a network.

  23. 7.8CVE-2026-83913EPSS 0.4%

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

  24. 7.8CVE-2026-83912EPSS 0.3%

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

  25. 7.0CVE-2026-83911EPSS 0.3%

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

  26. 9.8CVE-2026-83910EPSS 1.1%

    Out-of-bounds write in RPC Runtime allows an unauthorized attacker to execute code over a network.

  27. 4.7CVE-2026-83909EPSS 0.4%

    Exposure of sensitive system information to an unauthorized control sphere in Windows Win32 Kernel Subsystem allows an authorized attacker to disclose information locally.

  28. 7.0CVE-2026-83908EPSS 0.3%

    Release of invalid pointer or reference in RPC Runtime allows an authorized attacker to elevate privileges locally.

  29. 5.5CVE-2026-83907EPSS 0.9%

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

  30. 6.5CVE-2026-83906EPSS 1.0%

    Incorrect implementation of authentication algorithm in Windows Shell allows an unauthorized attacker to perform spoofing over a network.

  31. 4.7CVE-2026-83905EPSS 0.7%

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

  32. 5.5CVE-2026-83904EPSS 0.4%

    Out-of-bounds read in HID Parser Library allows an authorized attacker to disclose information locally.

  33. 7.8CVE-2026-83903EPSS 0.4%

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

  34. 7.8CVE-2026-83902EPSS 0.4%

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

  35. 7.0CVE-2026-83901EPSS 0.3%

    Use after free in Windows Win32 Kernel Subsystem allows an authorized attacker to elevate privileges locally.

  36. 7.0CVE-2026-83900EPSS 0.3%

    Use after free in Windows Bind Filter Driver allows an authorized attacker to elevate privileges locally.

  37. 7.0CVE-2026-83899EPSS 0.2%

    Improper privilege management in Windows Installer allows an authorized attacker to elevate privileges locally.

  38. 5.5CVE-2026-83898EPSS 0.4%

    Out-of-bounds read in HID Parser Library allows an authorized attacker to disclose information locally.

  39. 4.7CVE-2026-83897EPSS 0.7%

    Exposure of sensitive system information to an unauthorized control sphere in Windows Win32 Kernel Subsystem allows an authorized attacker to disclose information locally.

  40. 7.8CVE-2026-83896EPSS 0.4%

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

  41. 6.8CVE-2026-83895EPSS 0.5%

    Heap-based buffer overflow in Windows Win32 Kernel Subsystem allows an unauthorized attacker to elevate privileges with a physical attack.

  42. 5.5CVE-2026-83893EPSS 0.5%

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

  43. 5.5CVE-2026-83892EPSS 0.4%

    Out-of-bounds read in HID Parser Library allows an authorized attacker to disclose information locally.

  44. 8.8CVE-2026-83891EPSS 0.9%

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

  45. 8.8CVE-2026-83889EPSS 1.1%

    Release of invalid pointer or reference in DNS Server allows an authorized attacker to execute code over a network.

  46. 9.8CVE-2026-83888EPSS 1.0%

    Buffer over-read in Windows CD-ROM Driver allows an unauthorized attacker to elevate privileges over a network.

  47. 5.5CVE-2026-83887EPSS 0.4%

    Out-of-bounds read in HID Parser Library allows an authorized attacker to disclose information locally.

  48. 7.0CVE-2026-83886EPSS 0.3%

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

  49. 5.6CVE-2026-83885EPSS 0.2%

    Inadequate encryption strength in Windows Virtualization-Based Security (VBS) Enclave allows an authorized attacker to perform spoofing locally.

  50. 5.5CVE-2026-83884EPSS 0.4%

    Out-of-bounds read in HID Parser Library allows an authorized attacker to disclose information locally.

  51. 7.8CVE-2026-83883EPSS 0.4%

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

  52. 7.8CVE-2026-83882EPSS 0.4%

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

  53. 7.8CVE-2026-83881EPSS 0.4%

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

  54. 7.0CVE-2026-83879EPSS 0.2%

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

  55. 7.8CVE-2026-83877EPSS 0.4%

    Integer overflow or wraparound in HID Parser Library allows an authorized attacker to elevate privileges locally.

  56. 7.8CVE-2026-83876EPSS 0.4%

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

  57. 5.5CVE-2026-83875EPSS 0.4%

    Out-of-bounds read in HID Parser Library allows an authorized attacker to disclose information locally.

  58. 8.8CVE-2026-83874EPSS 0.9%

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

  59. 7.8CVE-2026-83873EPSS 0.4%

    Relative path traversal in Windows Shell allows an authorized attacker to elevate privileges locally.

  60. 7.8CVE-2026-83872EPSS 0.4%

    Incorrect conversion between numeric types in Windows TCP/IP allows an authorized attacker to elevate privileges locally.

  61. 7.0CVE-2026-83871EPSS 0.2%

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

  62. 5.5CVE-2026-83870EPSS 0.4%

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

  63. 9.8CVE-2026-83869EPSS 0.8%

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

  64. 7.0CVE-2026-83868EPSS 0.2%

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

  65. 7.8CVE-2026-83867EPSS 0.4%

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

  66. 7.0CVE-2026-83866EPSS 0.3%

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

  67. 4.7CVE-2026-83865EPSS 0.3%

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

  68. 5.5CVE-2026-83864EPSS 0.4%

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

  69. 7.8CVE-2026-83863EPSS 0.4%

    Heap-based buffer overflow in Servicing Stack Updates allows an authorized attacker to elevate privileges locally.

  70. 8.8CVE-2026-83862EPSS 0.4%

    Use after free in Windows Network Load Balancing allows an unauthorized attacker to execute code over an adjacent network.

  71. 7.8CVE-2026-83861EPSS 0.4%

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

  72. 7.5CVE-2026-83860EPSS 1.3%

    Stack-based buffer overflow in Windows GDI allows an unauthorized attacker to deny service over a network.

  73. 7.8CVE-2026-83859EPSS 0.4%

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

  74. 7.8CVE-2026-83857EPSS 0.4%

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

  75. 8.1CVE-2026-83856EPSS 0.6%

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

  76. 7.5CVE-2026-83855EPSS 1.3%

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

  77. 5.5CVE-2026-83854EPSS 0.3%

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

  78. 7.0CVE-2026-83853EPSS 0.3%

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

  79. 7.0CVE-2026-83852EPSS 0.3%

    Use after free in Windows Bind Filter Driver allows an authorized attacker to elevate privileges locally.

  80. 8.8CVE-2026-83851EPSS 0.8%

    Heap-based buffer overflow in Windows Partition Management Driver allows an unauthorized attacker to elevate privileges over a network.

  81. 7.8CVE-2026-83850EPSS 0.4%

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

  82. 5.5CVE-2026-83849EPSS 0.4%

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

  83. 7.8CVE-2026-83848EPSS 0.4%

    Untrusted pointer dereference in Windows COM+ Event System Service allows an authorized attacker to elevate privileges locally.

  84. 7.8CVE-2026-83847EPSS 0.3%

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

  85. 7.0CVE-2026-83846EPSS 0.3%

    Use after free in Connected Devices Platform Service (Cdpsvc) allows an authorized attacker to elevate privileges locally.

  86. 8.4CVE-2026-83845EPSS 0.3%

    Improper privilege management in Windows Internet (wininet.dll) allows an authorized attacker to perform spoofing locally.

  87. 7.0CVE-2026-83844EPSS 0.4%

    Out-of-bounds read in Windows Paint allows an unauthorized attacker to execute code locally.

  88. 7.5CVE-2026-83843EPSS 1.3%

    Out-of-bounds read in Windows Internet Key Exchange (IKE) Protocol allows an unauthorized attacker to deny service over a network.

  89. 7.0CVE-2026-83842EPSS 0.3%

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

  90. 7.0CVE-2026-83841EPSS 0.2%

    Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Win32K allows an authorized attacker to elevate privileges locally.

  91. 7.8CVE-2026-83840EPSS 0.4%

    Weak authentication in Windows Error Reporting allows an authorized attacker to elevate privileges locally.

  92. 7.0CVE-2026-83839EPSS 0.2%

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

  93. 8.0CVE-2026-83838EPSS 0.6%

    Integer underflow (wrap or wraparound) in Windows Bluetooth A2DP driver allows an authorized attacker to elevate privileges over an adjacent network.

  94. 7.8CVE-2026-83837EPSS 0.3%

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

  95. 7.8CVE-2026-83836EPSS 0.5%

    Heap-based buffer overflow in Windows Event Tracing allows an unauthorized attacker to execute code locally.

  96. 5.5CVE-2026-83835EPSS 0.9%

    Buffer over-read in Windows Common Log File System Driver allows an authorized attacker to disclose information locally.

  97. 7.0CVE-2026-83834EPSS 0.3%

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

  98. 7.8CVE-2026-83833EPSS 0.4%

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

  99. 7.8CVE-2026-83832EPSS 0.4%

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

  100. 7.8CVE-2026-83830EPSS 0.4%

    Heap-based buffer overflow in Windows COM+ Event System Service allows an authorized attacker to elevate privileges locally.