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CWE-416: Use After Free, page 36

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The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

What the weakness is: CWE-416 at MITRE

Ask an AI about CWE-416

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Show the promptExplain CWE-416: Use After Free and how to prevent and detect it in code. Use https://cwe.mitre.org/data/definitions/416.html and https://cve.bz/cve/cwe/416?via=ask-ai-copy for recent CVEs with this weakness. Cite the sources.

Opens a third-party assistant; its answer is its own, not cve.bz's. The prompt holds only this weakness's id and public links.

  1. 7.5CVE-2026-50379EPSS 0.5%

    Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Media allows an authorized attacker to elevate privileges over a network.

  2. 6.8CVE-2026-50374EPSS 0.3%

    Use after free in Windows Cloud Files Mini Filter Driver allows an authorized attacker to elevate privileges with a physical attack.

  3. 7.0CVE-2026-50371EPSS 0.2%

    Concurrent execution using shared resource with improper synchronization ('race condition') in Windows LUAFV allows an authorized attacker to elevate privileges locally.

  4. 8.8CVE-2026-50369EPSS 0.7%

    Use after free in Windows Remote Desktop Services allows an authorized attacker to elevate privileges over a network.

  5. 7.8CVE-2026-50359EPSS 0.3%

    Use after free in Microsoft XML Core Services allows an authorized attacker to elevate privileges locally.

  6. 7.8CVE-2026-50358EPSS 0.3%

    Use after free in Windows Media allows an authorized attacker to elevate privileges locally.

  7. 7.8CVE-2026-50353EPSS 0.3%

    Use after free in Windows DirectX allows an authorized attacker to elevate privileges locally.

  8. 8.1CVE-2026-50348EPSS 0.4%

    Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Runtime allows an unauthorized attacker to elevate privileges over a network.

  9. 7.0CVE-2026-50345EPSS 0.2%

    Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Runtime allows an authorized attacker to elevate privileges locally.

  10. 8.8CVE-2026-50340EPSS 0.7%

    Use after free in Windows Runtime allows an authorized attacker to elevate privileges over a network.

  11. 7.8CVE-2026-50331EPSS 0.3%

    Use after free in Windows Application Model allows an authorized attacker to elevate privileges locally.

  12. 7.8CVE-2026-50329EPSS 0.3%

    Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally.

  13. 7.8CVE-2026-50326EPSS 0.3%

    Use after free in Windows Unified Consent System allows an authorized attacker to elevate privileges locally.

  14. 7.0CVE-2026-50322EPSS 0.2%

    Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Runtime allows an authorized attacker to elevate privileges locally.

  15. 7.0CVE-2026-50321EPSS 0.2%

    Concurrent execution using shared resource with improper synchronization ('race condition') in Windows USB Driver allows an authorized attacker to elevate privileges locally.

  16. 7.0CVE-2026-50317EPSS 0.2%

    Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Operating Systems allows an authorized attacker to elevate privileges locally.

  17. 7.8CVE-2026-50314EPSS 0.5%

    Use after free in Microsoft Office allows an unauthorized attacker to execute code locally.

  18. 7.8CVE-2026-50312EPSS 0.4%

    Use after free in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.

  19. 7.8CVE-2026-50307EPSS 0.3%

    Use after free in Windows TCP/IP allows an authorized attacker to elevate privileges locally.

  20. 7.8CVE-2026-50306EPSS 0.3%

    Use after free in Windows TCP/IP allows an authorized attacker to elevate privileges locally.

  21. 7.8CVE-2026-50305EPSS 0.3%

    Use after free in Microsoft Brokering File System allows an authorized attacker to elevate privileges locally.

  22. 7.8CVE-2026-47642EPSS 0.5%

    Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code locally.

  23. 7.8CVE-2026-47290EPSS 0.5%

    Use after free in Microsoft Office allows an unauthorized attacker to execute code locally.

  24. 7.5CVE-2026-58608EPSS 0.6%

    Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Print Spooler Components allows an authorized attacker to execute code over a network.

  25. 7.8CVE-2026-58602EPSS 0.3%

    Use after free in Windows Kernel Mode Driver allows an authorized attacker to elevate privileges locally.

  26. 7.8CVE-2026-58526EPSS 0.2%

    Use after free in Windows Storage allows an authorized attacker to elevate privileges locally.

  27. 7.8CVE-2026-55948EPSS 0.5%

    Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code locally.

  28. 6.4CVE-2026-55000EPSS 0.3%

    Use after free in Windows USB Print Driver allows an unauthorized attacker to elevate privileges with a physical attack.

  29. 9.8CVE-2026-54995EPSS 0.8%

    Use after free in Reliable Multicast Transport Driver (RMCAST) allows an unauthorized attacker to execute code over a network.

  30. 7.8CVE-2026-54989EPSS 0.3%

    Use after free in Quality Windows Audio/Video Experience (QWAVE) service allows an authorized attacker to elevate privileges locally.

  31. 7.8CVE-2026-54129EPSS 0.3%

    Use after free in Windows Hyper-V allows an authorized attacker to elevate privileges locally.

  32. 8.4CVE-2026-54127EPSS 0.3%

    Use after free in Windows Hyper-V allows an unauthorized attacker to elevate privileges locally.

  33. 7.8CVE-2026-54114EPSS 0.3%

    Use after free in Windows Win32K allows an authorized attacker to elevate privileges locally.

  34. 7.0CVE-2026-54112EPSS 0.2%

    Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Win32K allows an authorized attacker to elevate privileges locally.

  35. 9.8CVE-2026-50694EPSS 0.8%

    Use after free in Windows Secure Socket Tunneling Protocol (SSTP) allows an unauthorized attacker to execute code over a network.

  36. 7.0CVE-2026-50384EPSS 0.2%

    Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Clip Service allows an authorized attacker to elevate privileges locally.

  37. 7.1CVE-2026-50354EPSS 0.3%

    Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally.

  38. 7.0CVE-2026-50323EPSS 0.3%

    Use after free in Windows Runtime allows an authorized attacker to elevate privileges locally.

  39. 7.0CVE-2026-50296EPSS 0.3%

    Use after free in Graphics Kernel allows an authorized attacker to elevate privileges locally.

  40. 7.8CVE-2026-50293EPSS 0.3%

    Use after free in Windows Internal Task Bar allows an authorized attacker to elevate privileges locally.

  41. 7.8CVE-2026-49808EPSS 0.2%

    Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Kernel allows an authorized attacker to elevate privileges locally.

  42. 7.0CVE-2026-49806EPSS 0.2%

    Concurrent execution using shared resource with improper synchronization ('race condition') in Windows USB Print Driver allows an authorized attacker to elevate privileges locally.

  43. 7.0CVE-2026-49802EPSS 0.2%

    Concurrent execution using shared resource with improper synchronization ('race condition') in Windows USB Print Driver allows an authorized attacker to elevate privileges locally.

  44. 9.3CVE-2026-49798EPSS 0.4%

    Use after free in Windows Kernel allows an unauthorized attacker to elevate privileges locally.

  45. 8.8CVE-2026-49795EPSS 0.3%

    Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally.

  46. 7.0CVE-2026-49784EPSS 0.2%

    Concurrent execution using shared resource with improper synchronization ('race condition') in Microsoft Windows App Store allows an authorized attacker to elevate privileges locally.

  47. 7.0CVE-2026-49183EPSS 0.2%

    Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Clipboard Server allows an authorized attacker to elevate privileges locally.

  48. 7.8CVE-2026-49173EPSS 0.3%

    Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally.

  49. 7.8CVE-2026-49171EPSS 0.3%

    Use after free in Microsoft Windows Speech allows an authorized attacker to elevate privileges locally.

  50. 8.8CVE-2026-49169EPSS 0.8%

    Use after free in DNS Server allows an authorized attacker to execute code over a network.