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CVE-2026-57099ImportantRevised 22 Sep

ASP.NET Core Denial of Service Vulnerability

MSRC advisory NVD CVE.org

Assessment

Allocation of resources without limits or throttling in ASP.NET Core allows an unauthorized attacker to deny service over a network.

Severity
Important
CVSS base score
7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C
Impact
Denial of Service
EPSS, next 30 days
1.2%Higher than 66.9% of scored CVEs · FIRST model run 26 Sep 2026 · about EPSS
Exploitability
Exploitation Less Likely
Publicly disclosed
No
Customer action
Required: apply the update
Component
ASP.NET Core
Weakness
CWE-770: Allocation of Resources Without Limits or Throttling
Issued by
Microsoft
Published
8 Sep 2026 · September 2026
Last revised
22 Sep 2026Updated an acknowledgement. This is an informational change only.

Updates that fix it

0 KBs

No KB listed

MSRC lists no downloadable update, which usually means a service-side fix or a release-notes update. Check the MSRC advisory.

Affected products

Developer Tools
1 affected product
  • Microsoft.AspNetCore.OData
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