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CWE-122: Heap-based Buffer Overflow, page 16

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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-2026-69685EPSS 0.3%

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

  2. 8.8CVE-2026-69681EPSS 0.8%

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

  3. 8.8CVE-2026-69671EPSS 0.8%

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

  4. 8.8CVE-2026-69669EPSS 0.8%

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

  5. 8.8CVE-2026-69649EPSS 0.8%

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

  6. 8.0CVE-2026-69643EPSS 0.8%

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

  7. 8.4CVE-2026-69638EPSS 0.4%

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

  8. 8.8CVE-2026-69629EPSS 0.8%

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

  9. 8.8CVE-2026-69628EPSS 0.9%

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

  10. 8.8CVE-2026-69625EPSS 0.8%

    Heap-based buffer overflow in Windows Connected User Experiences and Telemetry allows an authorized attacker to elevate privileges over a network.

  11. 8.0CVE-2026-69623EPSS 0.8%

    Heap-based buffer overflow in Windows HTTP Print Provider allows an authorized attacker to execute code over a network.

  12. 7.0CVE-2026-69621EPSS 0.3%

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

  13. 7.8CVE-2026-69604EPSS 0.3%

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

  14. 8.8CVE-2026-69603EPSS 0.3%

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

  15. 8.8CVE-2026-69601EPSS 0.8%

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

  16. 7.8CVE-2026-69594EPSS 0.3%

    Heap-based buffer overflow in Microsoft Local Security Authority Server (lsasrv) allows an authorized attacker to elevate privileges locally.

  17. 7.8CVE-2026-69593EPSS 0.3%

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

  18. 7.8CVE-2026-69592EPSS 0.3%

    Heap-based buffer overflow in Windows Universal Disk Format File System Driver (UDFS) allows an authorized attacker to elevate privileges locally.

  19. 9.8CVE-2026-69590EPSS 1.0%

    Remote Code Execution in Windows Routing and Remote Access Service (RRAS) allows attacker to gain an unauthorized access to victim's machine

  20. 7.8CVE-2026-69589EPSS 0.3%

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

  21. 9.8CVE-2026-69586EPSS 1.0%

    Integer overflow or wraparound in Microsoft Windows PDF allows an unauthorized attacker to execute code over a network.

  22. 7.8CVE-2026-69583EPSS 0.3%

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

  23. 7.8CVE-2026-69580EPSS 0.3%

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

  24. 7.0CVE-2026-69578EPSS 0.3%

    Numeric truncation error in Windows Kernel allows an authorized attacker to elevate privileges locally.

  25. 7.8CVE-2026-69571EPSS 0.3%

    Heap-based buffer overflow in Windows USB Audio Class driver (usbaudio.sys) allows an authorized attacker to elevate privileges locally.

  26. 6.8CVE-2026-69566EPSS 0.4%

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

  27. 7.0CVE-2026-69564EPSS 0.3%

    Heap-based buffer overflow in Windows Online Certificate Status Protocol (OCSP) allows an authorized attacker to elevate privileges locally.

  28. 7.0CVE-2026-69563EPSS 0.2%

    Heap-based buffer overflow in Windows Program Compatibility Assistant Service allows an authorized attacker to elevate privileges locally.

  29. 8.8CVE-2026-69556EPSS 0.8%

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

  30. 4.6CVE-2026-69548EPSS 0.5%

    Heap-based buffer overflow in Windows RNDIS allows an unauthorized attacker to disclose information with a physical attack.

  31. 8.8CVE-2026-69547EPSS 0.9%

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

  32. 7.8CVE-2026-69544EPSS 0.3%

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

  33. 7.8CVE-2026-69542EPSS 0.3%

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

  34. 7.8CVE-2026-69541EPSS 0.3%

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

  35. 7.8CVE-2026-69535EPSS 0.3%

    Numeric truncation error in Windows Spaceport.sys allows an authorized attacker to elevate privileges locally.

  36. 8.8CVE-2026-69529EPSS 0.8%

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

  37. 8.8CVE-2026-69522EPSS 0.8%

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

  38. 8.8CVE-2026-69518EPSS 0.8%

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

  39. 7.5CVE-2026-69514EPSS 0.7%

    Heap-based buffer overflow in Windows Remote Desktop Services allows an authorized attacker to execute code over a network.

  40. 7.8CVE-2026-69513EPSS 0.3%

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

  41. 8.8CVE-2026-69512EPSS 0.8%

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

  42. 8.8CVE-2026-69511EPSS 0.8%

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

  43. 7.8CVE-2026-69509EPSS 0.3%

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

  44. 9.8CVE-2026-69496EPSS 1.0%

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

  45. 8.8CVE-2026-69495EPSS 0.8%

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

  46. 8.8CVE-2026-69494EPSS 0.8%

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

  47. 9.8CVE-2026-69493EPSS 1.0%

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

  48. 7.0CVE-2026-69492EPSS 0.3%

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

  49. 9.8CVE-2026-69491EPSS 1.0%

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

  50. 7.8CVE-2026-69489EPSS 0.3%

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