Vulnerability Description
Uncontrolled resource consumption in ASP.NET Core allows an unauthorized attacker to deny service over a network.
CVSS Score
7.5
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Asp.Net Core | >= 8.0.0, < 8.0.28 |
| Microsoft | Visual Studio 2026 | >= 18.6.0, < 18.6.3 |
| Microsoft | .Net | >= 8.0.0, < 8.0.28 |
| Apple | Macos | - |
| Linux | Linux Kernel | - |
| Microsoft | Windows | - |
Related Weaknesses (CWE)
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45591Vendor Advisory
- https://access.redhat.com/errata/RHSA-2026:17527
- https://access.redhat.com/errata/RHSA-2026:25110
- https://access.redhat.com/errata/RHSA-2026:25111
- https://access.redhat.com/errata/RHSA-2026:25112
- https://access.redhat.com/errata/RHSA-2026:25113
- https://access.redhat.com/errata/RHSA-2026:25114
- https://access.redhat.com/errata/RHSA-2026:25115
- https://access.redhat.com/errata/RHSA-2026:25220
- https://access.redhat.com/errata/RHSA-2026:25221
- https://access.redhat.com/errata/RHSA-2026:25222
- https://access.redhat.com/errata/RHSA-2026:26638
- https://access.redhat.com/errata/RHSA-2026:26994
- https://access.redhat.com/errata/RHSA-2026:28007
- https://access.redhat.com/errata/RHSA-2026:28009
FAQ
What is CVE-2026-45591?
CVE-2026-45591 is a vulnerability with a CVSS score of 7.5 (HIGH). Uncontrolled resource consumption in ASP.NET Core allows an unauthorized attacker to deny service over a network.
How severe is CVE-2026-45591?
CVE-2026-45591 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-45591?
Check the references section above for vendor advisories and patch information. Affected products include: Microsoft Asp.Net Core, Microsoft Visual Studio 2026, Microsoft .Net, Apple Macos, Linux Linux Kernel.