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CWE-122: Heap-based Buffer Overflow, page 8

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The product writes past the end of a buffer that was allocated on the heap.

What the weakness is: CWE-122 at MITRE

Ask an AI about CWE-122

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Show the promptExplain CWE-122: Heap-based Buffer Overflow and how to prevent and detect it in code. Use https://cwe.mitre.org/data/definitions/122.html and https://cve.bz/cve/cwe/122?via=ask-ai-copy for recent CVEs with this weakness. Cite the sources.

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  1. 7.8CVE-2026-70093EPSS 0.4%

    Heap-based buffer overflow in Windows Rich Text Edit Control allows an authorized attacker to elevate privileges locally.

  2. 7.8CVE-2026-70092EPSS 0.5%

    Heap-based buffer overflow in Microsoft PostScript Printer Driver allows an unauthorized attacker to elevate privileges locally.

  3. 8.8CVE-2026-70089EPSS 0.9%

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

  4. 8.8CVE-2026-70068EPSS 0.9%

    Heap-based buffer overflow in Windows Client-Side Caching (CSC) Service allows an unauthorized attacker to elevate privileges over a network.

  5. 7.8CVE-2026-70060EPSS 0.4%

    Heap-based buffer overflow in Windows Win32 Kernel Subsystem allows an authorized attacker to elevate privileges locally.

  6. 7.8CVE-2026-70059EPSS 0.4%

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

  7. 7.8CVE-2026-70054EPSS 0.5%

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

  8. 7.8CVE-2026-70052EPSS 0.4%

    Integer overflow or wraparound in Windows PowerShell allows an authorized attacker to execute code locally.

  9. 7.8CVE-2026-70048EPSS 0.4%

    Heap-based buffer overflow in Windows Resilient File System (ReFS) allows an authorized attacker to elevate privileges locally.

  10. 8.1CVE-2026-70038EPSS 0.7%

    Use after free in Windows iSCSI allows an unauthorized attacker to execute code over a network.

  11. 7.5CVE-2026-70031EPSS 1.3%

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

  12. 7.8CVE-2026-70027EPSS 0.4%

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

  13. 7.8CVE-2026-70015EPSS 0.4%

    Use after free in Windows Local Security Authority Subsystem Service (LSASS) allows an authorized attacker to elevate privileges locally.

  14. 7.8CVE-2026-70010EPSS 0.4%

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

  15. 8.8CVE-2026-69985EPSS 0.8%

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

  16. 7.0CVE-2026-69970EPSS 0.3%

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

  17. 7.8CVE-2026-69963EPSS 0.3%

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

  18. 6.8CVE-2026-69958EPSS 0.5%

    Heap-based buffer overflow in Windows Overlay Filter allows an unauthorized attacker to execute code with a physical attack.

  19. 7.8CVE-2026-69949EPSS 0.4%

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

  20. 6.8CVE-2026-69947EPSS 0.5%

    Heap-based buffer overflow in Windows Overlay Filter allows an unauthorized attacker to execute code with a physical attack.

  21. 7.8CVE-2026-69918EPSS 0.4%

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

  22. 7.8CVE-2026-69909EPSS 0.3%

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

  23. 7.8CVE-2026-69898EPSS 0.4%

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

  24. 9.8CVE-2026-69886EPSS 0.9%

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

  25. 7.5CVE-2026-69789EPSS 0.5%

    Heap-based buffer overflow in Reliable Multicast Transport Driver (RMCAST) allows an unauthorized attacker to execute code over an adjacent network.

  26. 9.8CVE-2026-69639EPSS 0.9%

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

  27. 6.6CVE-2026-69635EPSS 0.5%

    Heap-based buffer overflow in Windows Installer allows an authorized attacker to elevate privileges with a physical attack.

  28. 9.8CVE-2026-69634EPSS 0.9%

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

  29. 7.8CVE-2026-69633EPSS 0.4%

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

  30. 7.8CVE-2026-69471EPSS 0.4%

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

  31. 8.0CVE-2026-69363EPSS 0.7%

    Heap-based buffer overflow in Windows Error Reporting allows an authorized attacker to elevate privileges over a network.

  32. 7.8CVE-2026-69354EPSS 0.4%

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

  33. 8.8CVE-2026-69326EPSS 0.8%

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

  34. 7.8CVE-2026-68836EPSS 0.4%

    Heap-based buffer overflow in Windows kernel32.dll allows an authorized attacker to elevate privileges locally.

  35. 7.0CVE-2026-109453EPSS 0.3%

    Heap-based buffer overflow in Virtual Hard Disk (VHD) Miniport Driver allows an authorized attacker to elevate privileges locally.

  36. 8.8CVE-2026-108467EPSS 1.0%

    Heap-based buffer overflow in Microsoft PostScript Printer Driver allows an authorized attacker to execute code over a network.

  37. 7.2CVE-2026-108399EPSS 0.4%

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

  38. 7.8CVE-2026-108130EPSS 0.4%

    Heap-based buffer overflow in Windows Virtualization-Based Security (VBS) Enclave allows an authorized attacker to elevate privileges locally.

  39. 8.8CVE-2026-105717EPSS 0.9%

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

  40. 8.8CVE-2026-105716EPSS 0.8%

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

  41. 7.5CVE-2026-105714EPSS 0.6%

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

  42. 7.5CVE-2026-105599EPSS 0.6%

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

  43. 8.8CVE-2026-105598EPSS 0.8%

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

  44. 8.8CVE-2026-105597EPSS 0.8%

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

  45. 8.8CVE-2026-105596EPSS 0.8%

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

  46. 8.8CVE-2026-105593EPSS 0.8%

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

  47. 7.5CVE-2026-105592EPSS 0.6%

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

  48. 8.8CVE-2026-105591EPSS 0.8%

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

  49. 9.8CVE-2026-105016EPSS 1.7%

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

  50. 7.8CVE-2026-105003EPSS 0.3%

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