Vulnerability Description
Incorrect implementation of authentication algorithm in ASP.NET Core allows an authorized attacker to elevate privileges over a network.
CVSS Score
8.8
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | .Net | >= 8.0.0, < 8.0.29 |
| Apple | Macos | - |
| Linux | Linux Kernel | - |
| Microsoft | Windows | - |
| Microsoft | Visual Studio 2022 | >= 17.12.0, < 17.12.22 |
| Microsoft | Visual Studio 2026 | >= 18.7.0, < 18.7.4 |
Related Weaknesses (CWE)
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-47300PatchVendor Advisory
FAQ
What is CVE-2026-47300?
CVE-2026-47300 is a vulnerability with a CVSS score of 8.8 (HIGH). Incorrect implementation of authentication algorithm in ASP.NET Core allows an authorized attacker to elevate privileges over a network.
How severe is CVE-2026-47300?
CVE-2026-47300 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-47300?
Check the references section above for vendor advisories and patch information. Affected products include: Microsoft .Net, Apple Macos, Linux Linux Kernel, Microsoft Windows, Microsoft Visual Studio 2022.