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CWE-122: Heap-based Buffer Overflow, page 18

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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-2026-69293EPSS 0.3%

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

  2. 8.8CVE-2026-69291EPSS 0.8%

    Heap-based buffer overflow in Windows Volume Manager Extension Driver allows an unauthorized attacker to execute code over a network.

  3. 8.8CVE-2026-69285EPSS 0.8%

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

  4. 7.8CVE-2026-69284EPSS 0.3%

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

  5. 7.8CVE-2026-69283EPSS 0.3%

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

  6. 9.8CVE-2026-69276EPSS 1.0%

    Integer underflow (wrap or wraparound) in Microsoft UxTheme Library (uxtheme.dll) allows an unauthorized attacker to execute code over a network.

  7. 7.1CVE-2026-69272EPSS 0.6%

    Heap-based buffer overflow in Microsoft Standard XPS allows an authorized attacker to elevate privileges over a network.

  8. 8.0CVE-2026-69271EPSS 0.8%

    Heap-based buffer overflow in Microsoft Standard XPS allows an authorized attacker to elevate privileges over a network.

  9. 7.8CVE-2026-69270EPSS 0.3%

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

  10. 7.0CVE-2026-68897EPSS 0.3%

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

  11. 8.0CVE-2026-68894EPSS 0.8%

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

  12. 7.8CVE-2026-68892EPSS 0.3%

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

  13. 7.8CVE-2026-68890EPSS 0.3%

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

  14. 7.1CVE-2026-68889EPSS 0.6%

    Heap-based buffer overflow in Microsoft Standard XPS allows an authorized attacker to elevate privileges over a network.

  15. 7.8CVE-2026-68888EPSS 0.3%

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

  16. 7.8CVE-2026-68885EPSS 0.3%

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

  17. 7.0CVE-2026-68884EPSS 0.3%

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

  18. 8.0CVE-2026-68880EPSS 0.8%

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

  19. 7.8CVE-2026-68877EPSS 0.3%

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

  20. 8.0CVE-2026-68876EPSS 0.8%

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

  21. 7.8CVE-2026-68850EPSS 0.3%

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

  22. 7.8CVE-2026-68848EPSS 0.3%

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

  23. 7.8CVE-2026-68845EPSS 0.3%

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

  24. 7.8CVE-2026-68844EPSS 0.3%

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

  25. 7.8CVE-2026-68841EPSS 0.3%

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

  26. 9.8CVE-2026-68839EPSS 1.0%

    Heap-based buffer overflow in Windows USB Mass Storage Class Driver allows an unauthorized attacker to execute code over a network.

  27. 6.8CVE-2026-68833EPSS 0.4%

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

  28. 8.8CVE-2026-68828EPSS 0.8%

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

  29. 8.0CVE-2026-68827EPSS 0.8%

    Integer underflow (wrap or wraparound) in Windows GDI+ allows an authorized attacker to elevate privileges over a network.

  30. 7.8CVE-2026-68787EPSS 0.3%

    Heap-based buffer overflow in SQL Server allows an authorized attacker to execute code locally.

  31. 8.8CVE-2026-68786EPSS 0.9%

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

  32. 4.9CVE-2026-68785EPSS 1.1%

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

  33. 8.8CVE-2026-68775EPSS 0.9%

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

  34. 9.8CVE-2026-67643EPSS 1.0%

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

  35. 8.8CVE-2026-67642EPSS 0.9%

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

  36. 8.8CVE-2026-67639EPSS 0.9%

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

  37. 8.8CVE-2026-67638EPSS 0.9%

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

  38. 9.8CVE-2026-67631EPSS 1.0%

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

  39. 8.8CVE-2026-67388EPSS 0.9%

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

  40. 8.8CVE-2026-67384EPSS 0.9%

    Integer overflow or wraparound in SQL Server allows an authorized attacker to execute code over a network.

  41. 8.8CVE-2026-67381EPSS 0.9%

    Heap-based buffer overflow in SQL Server allows an authorized attacker to elevate privileges over a network.

  42. 8.8CVE-2026-67380EPSS 0.9%

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

  43. 8.8CVE-2026-67373EPSS 0.9%

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

  44. 7.8CVE-2026-62810EPSS 0.3%

    Heap-based buffer overflow in Active Directory Certificate Services (AD CS) allows an authorized attacker to elevate privileges locally.

  45. 8.8CVE-2026-62744EPSS 0.8%

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

  46. 7.8CVE-2026-58600EPSS 0.5%

    Heap-based buffer overflow in Microsoft Windows Codecs Library allows an unauthorized attacker to elevate privileges locally.

  47. 7.8CVE-2026-58599EPSS 0.5%

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

  48. 7.5CVE-2026-79377EPSS 0.5%

    A heap overflow in the a2dp_decoder_sbc.cpp component of Bestechnic Co., Ltd BES2300 Bluetooth Audio SoC firmware v3.x and earlier allows attackers to cause a Denial of Service (DoS) via sending a crafted L2CAP packet.

  49. 8.7CVE-2026-77102EPSS 0.5%

    CommServe contained a heap-based buffer overflow issue affecting service availability. Software customers upgrade to resolved maintenance release. Update CommServe.

  50. 8.4CVE-2026-20502EPSS 0.2%

    In vdec, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALP…