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CWE-122: Heap-based Buffer Overflow, page 21

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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. 8.8CVE-2026-14664EPSS 0.4%

    Heap buffer overflow in PostgreSQL regexp allows the query author to execute arbitrary code as the operating system user running the database, via text that would not pass encoding validation. This shares heritage with CVE-2026-2006, but …

  2. 6.0CVE-2026-18368EPSS 0.3%

    In Teltonika Networks RUTOS devices, a vulnerability exists in modbusgwd due to improper handling of Modbus TCP request data. A remote, unauthenticated attacker with access to the affected service could trigger a heap-based buffer overf…

  3. 5.5CVE-2026-19694EPSS 0.1%

    TTX Logger file parser crash in 4.6.0 to 4.6.7 allows denial of service

  4. 8.8CVE-2026-19004EPSS 0.5%

    An application using the MongoDB BI Connector ODBC Driver may experience a memory-safety issue when processing output parameters from a stored procedure. Triggering this issue requires connecting to an untrusted or impersonated database se…

  5. 2.1CVE-2024-14043EPSS 0.5%

    A vulnerability was determined in Open5GS up to 2.7.1. This vulnerability affects the function mme_s6a_subscription_data_from_avp of the file src/mme/mme-fd-path.c of the component Diameter S6a Interface. Executing a manipulation of the ar…

  6. 8.3CVE-2026-73242EPSS 0.4%

    FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.30.0, FreeRDP's winpr/libwinpr/sspi/Kerberos/kerberos.c kerberos_DecryptMessage function fails to bound the peer-controlled GSS Wrap-token EC field before using it…

  7. 8.1CVE-2026-71331EPSS 0.7%

    Integer overflow or wraparound in Windows Device Health Attestation (DHA) allows an unauthorized attacker to execute code over a network.

  8. 7.8CVE-2026-70347EPSS 0.3%

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

  9. 7.8CVE-2026-70345EPSS 0.3%

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

  10. 7.8CVE-2026-70330EPSS 0.3%

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

  11. 7.8CVE-2026-70304EPSS 0.3%

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

  12. 7.8CVE-2026-70130EPSS 0.3%

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

  13. 7.8CVE-2026-68815EPSS 0.5%

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

  14. 7.8CVE-2026-68812EPSS 0.5%

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

  15. 7.8CVE-2026-68807EPSS 0.5%

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

  16. 7.8CVE-2026-68805EPSS 0.5%

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

  17. 7.8CVE-2026-68804EPSS 0.5%

    Numeric truncation error in Microsoft Office Excel allows an unauthorized attacker to execute code locally.

  18. 7.8CVE-2026-68801EPSS 0.5%

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

  19. 7.8CVE-2026-68800EPSS 0.5%

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

  20. 7.8CVE-2026-68798EPSS 0.5%

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

  21. 7.8CVE-2026-68796EPSS 0.5%

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

  22. 7.8CVE-2026-68794EPSS 0.5%

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

  23. 5.5CVE-2026-66810EPSS 0.4%

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

  24. 7.8CVE-2026-66799EPSS 0.3%

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

  25. 7.8CVE-2026-65814EPSS 0.3%

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

  26. 7.8CVE-2026-65799EPSS 0.3%

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

  27. 6.7CVE-2026-65797EPSS 0.3%

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

  28. 8.1CVE-2026-65796EPSS 0.7%

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

  29. 9.8CVE-2026-65791EPSS 1.0%

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

  30. 7.8CVE-2026-65790EPSS 0.3%

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

  31. 7.8CVE-2026-65787EPSS 0.3%

    Heap-based buffer overflow in Desktop Window Manager allows an authorized attacker to elevate privileges locally.

  32. 7.8CVE-2026-65786EPSS 0.3%

    Heap-based buffer overflow in Desktop Window Manager allows an authorized attacker to elevate privileges locally.

  33. 7.8CVE-2026-65774EPSS 0.3%

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

  34. 8.1CVE-2026-65679EPSS 0.7%

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

  35. 7.8CVE-2026-65672EPSS 0.3%

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

  36. 7.8CVE-2026-65671EPSS 0.3%

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

  37. 7.8CVE-2026-65664EPSS 0.5%

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

  38. 7.8CVE-2026-65661EPSS 0.5%

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

  39. 7.8CVE-2026-64920EPSS 0.5%

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

  40. 7.8CVE-2026-64915EPSS 0.5%

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

  41. 7.8CVE-2026-64914EPSS 0.5%

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

  42. 7.8CVE-2026-64911EPSS 0.5%

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

  43. 7.8CVE-2026-64909EPSS 0.5%

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

  44. 7.8CVE-2026-64908EPSS 0.5%

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

  45. 7.8CVE-2026-64906EPSS 0.5%

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

  46. 7.8CVE-2026-64903EPSS 0.5%

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

  47. 7.8CVE-2026-64898EPSS 0.5%

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

  48. 7.8CVE-2026-63533EPSS 0.5%

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

  49. 7.8CVE-2026-63532EPSS 0.5%

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

  50. 7.8CVE-2026-63519EPSS 0.5%

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