Answer in brief
CVE-2026-40372 records a Critical severity (CVSS 9.1) vulnerability in ASP.NET Core Elevation of Privilege Vulnerability. The current sources do not mark it as known exploited. The current feed maps Microsoft/ASP.NET Core 10.0 (generic), Microsoft/Microsoft Visual Studio 2026 version 18.5 (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 9.1. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Microsoft/ASP.NET Core 10.0 (generic), Microsoft/Microsoft Visual Studio 2026 version 18.5 (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Microsoft/ASP.NET Core 10.0generic | >=10.0 <10.0.7 | 10.0.7 |
| Microsoft/Microsoft Visual Studio 2026 version 18.5generic | >=18.5.0 <18.5.2 | 18.5.2 |
Published upstream
Apr 21, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Jul 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jul 15, 2026
A flaw was found in ASP.NET Core due to improper verification of cryptographic signatures. An unauthorized attacker can exploit this vulnerability remotely over a network, leading to privilege escalation.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2026-40372 records a Critical severity (CVSS 9.1) vulnerability in ASP.NET Core Elevation of Privilege Vulnerability. The current sources do not mark it as known exploited. The current feed maps Microsoft/ASP.NET Core 10.0 (generic), Microsoft/Microsoft Visual Studio 2026 version 18.5 (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 9.1. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Microsoft/ASP.NET Core 10.0 (generic), Microsoft/Microsoft Visual Studio 2026 version 18.5 (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Microsoft/ASP.NET Core 10.0generic | >=10.0 <10.0.7 | 10.0.7 |
| Microsoft/Microsoft Visual Studio 2026 version 18.5generic | >=18.5.0 <18.5.2 | 18.5.2 |
Published upstream
Apr 21, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Jul 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jul 15, 2026
A flaw was found in ASP.NET Core due to improper verification of cryptographic signatures. An unauthorized attacker can exploit this vulnerability remotely over a network, leading to privilege escalation.
Quoted source text, attributed separately from HOL analysis.