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CVE-2026-45591

ASP.NET Core Denial of Service Vulnerability

Published: Jun 9, 2026Updated: Jun 30, 2026 Sources: CVE List NVD BDUCWE-400
7.5HIGH
NVD MITRE
EPSS Score
2.4%
Top 17.8%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

Description

Uncontrolled resource consumption in ASP.NET Core allows an unauthorized attacker to deny service over a network.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
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Weaknesses

CWE-400NVD-CWE-noinfoCWE-770

Affected Products

Microsoft Corp
commercial·USaka Microsoft, microsoft corporation
.NET 10.0On-prem
Operating Systems / windows
.NET 8.0LibraryLibrary
OSS Libraries / generic-library
.NET 9.0MixedLibrary
OSS Libraries / generic-library
ASP.NET Core 10.0LibraryLibrary
OSS Libraries / web-framework
ASP.NET Core 8.0LibraryLibrary
OSS Libraries / web-framework
ASP.NET Core 9.0On-premLibrary
OSS Libraries / web-framework
Microsoft Visual Studio 2026 version 18.6On-prem
Operating Systems / windows
ASP.NET CoreOn-premLibrary
OSS Libraries / web-framework
and 5 more affected products View all →

Exploitability

Official Patch Available
Is your org exposed to CVE-2026-45591?We can run the check for you — a free external exposure review, no install. Check my exposure

Attack Graph

Products CVE Techniques Tactics

Click technique nodes for MITRE ATT&CK details · drag to pan · Ctrl/⌘ + scroll to zoom, or go fullscreen.

MITRE ATT&CK

1 technique
Impact
View detailed technique mapping

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45591
msrc.microsoft.com
https://access.redhat.com/errata/RHSA-2026:17527
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:25110
access.redhat.com
and 18 more references View all →
News mentions
Could not load news mentions.

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