CVE-2026-40372

Improper verification of cryptographic signature in ASP.NET Core allows an unauthorized attacker to elevate privileges over a network.

CVSS v3 9.1 CRITICAL

9.1^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40372	Vendor Advisory
https://access.redhat.com/security/cve/CVE-2026-40372
https://bugzilla.redhat.com/show_bug.cgi?id=2460224
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-40372.json

Configurations

Configuration 1 (hide)

cpe:2.3:a:microsoft:asp.net_core:*:*:*:*:*:*:*:*

History

26 Oct 2026, 21:10

Type	Values Removed	Values Added
Summary		(es) Verificación incorrecta de firma criptográfica en ASP.NET Core permite a un atacante no autorizado elevar privilegios sobre una red.

Information

Published : 2026-04-21 20:16

Updated : 2026-10-26 21:10

NVD link : CVE-2026-40372

Mitre link : CVE-2026-40372

CVE.ORG link : CVE-2026-40372

JSON object : View

Products Affected

microsoft

asp.net_core

CWE

CWE-347

Improper Verification of Cryptographic Signature

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