Answer in brief
CVE-2026-42899 records a High severity (CVSS 7.5) vulnerability in ASP.NET Core Denial of Service Vulnerability. The current sources do not mark it as known exploited. The current feed maps Microsoft/.NET 10.0 (generic), Microsoft/.NET 8.0 (generic), Microsoft/.NET 9.0 (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
Answer in brief
CVE-2026-42899 records a High severity (CVSS 7.5) vulnerability in ASP.NET Core Denial of Service Vulnerability. The current sources do not mark it as known exploited. The current feed maps Microsoft/.NET 10.0 (generic), Microsoft/.NET 8.0 (generic), Microsoft/.NET 9.0 (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 7.5. 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/.NET 10.0 (generic), Microsoft/.NET 8.0 (generic), Microsoft/.NET 9.0 (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Microsoft/.NET 10.0generic | >=10.0.0 <10.0.8 | 10.0.8 |
| Microsoft/.NET 8.0generic | >=8.0.0 <8.0.27 | 8.0.27 |
| Microsoft/.NET 9.0generic | >=9.0.0 <9.0.16 | 9.0.16 |
Published upstream
May 12, 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 dotnet. An infinite loop in ASP.NET Core allows an unauthenticated remote attacker to cause a denial of service over a network. This issue can lead to an application crash and a high consumption of system resources.
Quoted source text, attributed separately from HOL analysis.
CVSS is 7.5. 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/.NET 10.0 (generic), Microsoft/.NET 8.0 (generic), Microsoft/.NET 9.0 (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Microsoft/.NET 10.0generic | >=10.0.0 <10.0.8 | 10.0.8 |
| Microsoft/.NET 8.0generic | >=8.0.0 <8.0.27 | 8.0.27 |
| Microsoft/.NET 9.0generic | >=9.0.0 <9.0.16 | 9.0.16 |
Published upstream
May 12, 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 dotnet. An infinite loop in ASP.NET Core allows an unauthenticated remote attacker to cause a denial of service over a network. This issue can lead to an application crash and a high consumption of system resources.
Quoted source text, attributed separately from HOL analysis.