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CWE-306: Missing Authentication for Critical Functionality, page 13

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The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.

What the weakness is: CWE-306 at MITRE

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Show the promptExplain CWE-306: Missing Authentication for Critical Functionality and how to prevent and detect it in code. Use https://cwe.mitre.org/data/definitions/306.html and https://cve.bz/cve/cwe/306?via=ask-ai-copy for recent CVEs with this weakness. Cite the sources.

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  5. 7.5CVE-2026-49363EPSS 0.8%

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  6. 7.5CVE-2026-49362EPSS 0.8%

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  7. 5.5CVE-2026-87924EPSS 0.8%

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  8. 5.5CVE-2026-87922EPSS 0.7%

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  9. 8.5CVE-2026-77974EPSS 0.3%

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  10. 5.3CVE-2026-79961EPSS 0.4%

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  11. 4.3CVE-2026-11838EPSS 0.3%

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  12. 6.7CVE-2026-85981EPSS 0.2%

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  13. 5.5CVE-2026-86808EPSS 0.8%

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  14. 9.9CVE-2026-86464EPSS 0.5%

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  15. 5.5CVE-2026-83991EPSS 0.3%

    Missing authentication for critical function in Windows Cloud Files Mini Filter Driver allows an authorized attacker to perform tampering locally.

  16. 5.5CVE-2026-73004EPSS 0.3%

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  17. 5.5CVE-2026-72964EPSS 0.3%

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  18. 5.5CVE-2026-69674EPSS 0.3%

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  19. 5.5CVE-2026-69554EPSS 0.3%

    Missing authentication for critical function in Microsoft Windows Search Component allows an authorized attacker to perform tampering locally.

  20. 7.8CVE-2026-69528EPSS 0.3%

    Missing authentication for critical function in Windows Shell allows an authorized attacker to elevate privileges locally.

  21. 6.8CVE-2026-69415EPSS 0.7%

    Missing authentication for critical function in Windows DHCP Server allows an authorized attacker to elevate privileges over a network.

  22. 5.5CVE-2026-69321EPSS 0.3%

    Missing authentication for critical function in Windows Power Dependency Coordinator allows an authorized attacker to perform tampering locally.

  23. 8.7CVE-2026-86728EPSS 0.6%

    AVideo through 29.0 contains an authentication bypass vulnerability in plugin/PlayLists/epg.json.php that exposes live-stream keys and private EPG schedules to unauthenticated users. Attackers can request the endpoint with sequential user …

  24. 8.7CVE-2026-86727EPSS 0.5%

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  25. 8.8CVE-2026-77097EPSS 0.5%

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  26. 9.3CVE-2026-62645EPSS 0.6%

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  27. 7.7CVE-2026-19397EPSS 0.3%

    Missing authentication for a critical function in ASUS Control Center Express Agent allows an unauthenticated nearby user to control the host via a direct connection to the agent when the host has an active login session. Refer to the '  S…

  28. 9.3CVE-2026-86543EPSS 0.9%

    knowns versions before 0.30.0 serve the management API without authentication on all network interfaces by default, with no password required on fresh installations. Attackers can access the unauthenticated /api/tunnel/start endpoint to pr…

  29. 5.9CVE-2026-86506EPSS 0.4%

    In JetBrains GoLand before 2026.2.2.1 missing authentication on the GoLand profiler's injected pprof server exposed profiling data

  30. 8.4CVE-2026-86502EPSS 0.2%

    In JetBrains IntelliJ IDEA before 2026.2.2 missing TLS and authentication on the IJent gRPC server allowed local code execution on Remote Development hosts

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  32. 9.8CVE-2026-86480EPSS 0.6%

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  33. 8.2CVE-2026-79645EPSS 0.4%

    Dell SCG 5.0 Appliance versions prior to 5.36.00.16 and Dell SCG 5.0 Application versions prior to 5.36.00.00, contains a Missing Authentication for Critical Function vulnerability. An unauthenticated attacker with remote access could pote…

  34. 7.5CVE-2026-78480EPSS 0.6%

    Dell SCG 5.0 Appliance versions prior to 5.36.00.16 and Dell SCG 5.0 Application versions prior to 5.36.00.00, contains a Missing Authentication for Critical Function vulnerability. An unauthenticated attacker with remote access could pote…

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  43. 9.3CVE-2026-86184EPSS 1.1%

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  44. 9.3CVE-2026-86124EPSS 1.0%

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  45. 9.3CVE-2026-86121EPSS 1.1%

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