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CWE-122: Heap-based Buffer Overflow, page 26

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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

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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-2026-50448EPSS 0.5%

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

  2. 9.8CVE-2026-50447EPSS 1.0%

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

  3. 7.8CVE-2026-50417EPSS 0.3%

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

  4. 7.8CVE-2026-50407EPSS 0.3%

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

  5. 7.8CVE-2026-50386EPSS 0.5%

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

  6. 9.6CVE-2026-50380EPSS 0.8%

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

  7. 7.8CVE-2026-50375EPSS 0.3%

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

  8. 7.0CVE-2026-50372EPSS 0.3%

    Buffer over-read in Windows Redirected Drive Buffering allows an authorized attacker to elevate privileges locally.

  9. 8.8CVE-2026-50370EPSS 0.5%

    Heap-based buffer overflow in Windows DHCP Server allows an unauthorized attacker to execute code over an adjacent network.

  10. 7.8CVE-2026-50363EPSS 0.3%

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

  11. 7.8CVE-2026-50362EPSS 0.5%

    Heap-based buffer overflow in Windows Resilient File System (ReFS) allows an unauthorized attacker to execute code locally.

  12. 7.8CVE-2026-50347EPSS 0.5%

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

  13. 7.8CVE-2026-50336EPSS 0.3%

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

  14. 7.8CVE-2026-50332EPSS 0.3%

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

  15. 9.8CVE-2026-50330EPSS 1.3%

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

  16. 7.8CVE-2026-50327EPSS 0.3%

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

  17. 7.8CVE-2026-50313EPSS 0.5%

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

  18. 7.8CVE-2026-50309EPSS 0.3%

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

  19. 7.8CVE-2026-50301EPSS 0.5%

    Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally.

  20. 7.8CVE-2026-58640EPSS 0.4%

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

  21. 7.8CVE-2026-58618EPSS 0.5%

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

  22. 7.8CVE-2026-58610EPSS 0.5%

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

  23. 7.8CVE-2026-58601EPSS 0.3%

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

  24. 7.8CVE-2026-55012EPSS 0.5%

    Integer overflow or wraparound in Microsoft Defender allows an unauthorized attacker to execute code locally.

  25. 8.8CVE-2026-55005EPSS 1.0%

    Heap-based buffer overflow in Microsoft Exchange Server allows an authorized attacker to execute code over a network.

  26. 7.8CVE-2026-54993EPSS 0.5%

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

  27. 7.8CVE-2026-54992EPSS 0.3%

    Heap-based buffer overflow in Windows Message Queuing Queue Manager allows an unauthorized attacker to execute code locally.

  28. 8.8CVE-2026-54990EPSS 0.8%

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

  29. 7.8CVE-2026-54987EPSS 0.3%

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

  30. 7.8CVE-2026-54986EPSS 0.3%

    Heap-based buffer overflow in Windows Win32K allows an authorized attacker to elevate privileges locally.

  31. 6.8CVE-2026-54132EPSS 0.4%

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

  32. 8.4CVE-2026-54122EPSS 0.4%

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

  33. 7.8CVE-2026-54109EPSS 0.3%

    Integer overflow or wraparound in Windows Resilient File System (ReFS) allows an authorized attacker to execute code locally.

  34. 7.5CVE-2026-50696EPSS 1.2%

    Heap-based buffer overflow in Windows Internet Key Exchange (IKE) Protocol allows an unauthorized attacker to deny service over a network.

  35. 3.3CVE-2026-50678EPSS 0.5%

    Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.

  36. 7.8CVE-2026-50675EPSS 0.5%

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

  37. 7.8CVE-2026-50308EPSS 0.5%

    Integer underflow (wrap or wraparound) in Windows NTFS allows an unauthorized attacker to execute code locally.

  38. 6.8CVE-2026-50299EPSS 0.4%

    Integer overflow or wraparound in Windows Storage Spaces Direct allows an unauthorized attacker to execute code with a physical attack.

  39. 6.6CVE-2026-49804EPSS 0.5%

    Heap-based buffer overflow in Windows USB Video Driver allows an unauthorized attacker to elevate privileges with a physical attack.

  40. 7.8CVE-2026-49800EPSS 0.3%

    Integer overflow or wraparound in Windows Web Proxy Auto-Discovery Protocol (WPAD) allows an authorized attacker to elevate privileges locally.

  41. 7.8CVE-2026-49797EPSS 0.5%

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

  42. 7.8CVE-2026-49796EPSS 0.5%

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

  43. 7.8CVE-2026-49793EPSS 0.3%

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

  44. 7.8CVE-2026-49790EPSS 0.4%

    Windows Universal Disk Format File System Driver (UDFS) Elevation of Privilege Vulnerability

  45. 7.8CVE-2026-49184EPSS 0.3%

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

  46. 8.8CVE-2026-49178EPSS 0.9%

    Heap-based buffer overflow in Active Directory Domain Services allows an authorized attacker to execute code over a network.

  47. 7.8CVE-2026-49175EPSS 0.3%

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

  48. 9.8CVE-2026-49172EPSS 1.0%

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

  49. 9.8CVE-2026-49164EPSS 0.8%

    Heap-based buffer overflow in Active Directory Domain Services allows an unauthorized attacker to execute code over a network.

  50. 8.8CVE-2026-48564EPSS 0.9%

    Heap-based buffer overflow in Windows DHCP Server allows an authorized attacker to execute code over a network.