CVE-2026-40372
Received
Received - Intake
Cryptographic Signature Bypass in ASP.NET Core Enables Privilege Escalation
Publication date: 2026-04-21
Last updated on: 2026-04-27
Assigner: Microsoft Corporation
Description
Description
Improper verification of cryptographic signature in ASP.NET Core allows an unauthorized attacker to elevate privileges over a network.
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| microsoft | asp.net_core | From 10.0.0 (inc) to 10.0.7 (exc) |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-347 | The product does not verify, or incorrectly verifies, the cryptographic signature for data. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability involves improper verification of a cryptographic signature in ASP.NET Core. Because of this flaw, an unauthorized attacker can exploit the issue over a network to elevate their privileges.
How can this vulnerability impact me? :
The impact of this vulnerability is that an attacker can gain elevated privileges without authorization. This means they could potentially perform actions or access resources that should be restricted, leading to serious security risks.
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