Review reviewHigh

CVE-2026-26130

Microsoft ASP.NET Core 10.0, ASP.NET Core 8.0, ASP.NET Core 9.0

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

PRIORITY ASSESSMENT

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV

Exploit probability2.82%

Technical severityCVSS 7.5

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

Product: Microsoft ASP.NET Core 10.0, ASP.NET Core 8.0, ASP.NET Core 9.0
Affected versions: >= 10.0 < 10.0.4, >= 8.0 < 8.0.25, >= 9.0 < 9.0.14, >= 8.0.0 < 8.0.25, >= 9.0.0 < 9.0.14, >= 10.0.0 < 10.0.4
Fixed versions: 8.0.25, 9.0.14, 10.0.4

Confirm exposure before applying a vendor-supported change.

1
Identify
Confirm that Microsoft ASP.NET Core 10.0, ASP.NET Core 8.0, ASP.NET Core 9.0 and an affected version are present.
2
Prioritize
Combine exploitation signals with asset exposure and business criticality.
3
Remediate
Follow the vendor advisory or supported update path and preserve rollback options.
4
Verify
Recheck the version, service health, access paths, and relevant logs.