Answer in brief
CVE-2026-32203 records a High severity (CVSS 7.5) vulnerability in .NET and Visual Studio Denial of Service Vulnerability. The current sources do not mark it as known exploited. The current feed maps Microsoft/Microsoft Visual Studio 2022 version 17.12 (generic), Microsoft/Microsoft Visual Studio 2022 version 17.14 (generic), Microsoft/Microsoft Visual Studio 2026 version 18.4 (generic), Microsoft/.NET 10.0 (generic) and additional mapped packages. 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-2026-32203 records a High severity (CVSS 7.5) vulnerability in .NET and Visual Studio Denial of Service Vulnerability. The current sources do not mark it as known exploited. The current feed maps Microsoft/Microsoft Visual Studio 2022 version 17.12 (generic), Microsoft/Microsoft Visual Studio 2022 version 17.14 (generic), Microsoft/Microsoft Visual Studio 2026 version 18.4 (generic), Microsoft/.NET 10.0 (generic) and additional mapped packages. 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/Microsoft Visual Studio 2022 version 17.12 (generic), Microsoft/Microsoft Visual Studio 2022 version 17.14 (generic), Microsoft/Microsoft Visual Studio 2026 version 18.4 (generic), Microsoft/.NET 10.0 (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Microsoft/Microsoft Visual Studio 2022 version 17.12generic | >=17.12.0 <17.12.19 | 17.12.19 |
| Microsoft/Microsoft Visual Studio 2022 version 17.14generic | >=17.14.0 <17.14.30 | 17.14.30 |
| Microsoft/Microsoft Visual Studio 2026 version 18.4generic | >=18.4.0 <18.4.4 | 18.4.4 |
| Microsoft/.NET 10.0generic | >=10.0.0 <10.0.6 | 10.0.6 |
| Microsoft/.NET 8.0generic | >=8.0.0 <8.0.26 | 8.0.26 |
| Microsoft/.NET 9.0generic | >=9.0.0 <9.0.15 | 9.0.15 |
| System.Security.Cryptography.Xmlnuget | >=10.0.0,<=10.0.5 | 10.0.6 |
| System.Security.Cryptography.Xmlnuget | >=9.0.0,<=9.0.14 | 9.0.15 |
| System.Security.Cryptography.Xmlnuget | >=8.0.0,<=8.0.2 | 8.0.3 |
Published upstream
Apr 14, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 14, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jul 15, 2026
A flaw was found in .NET. A remote attacker could exploit a stack overflow vulnerability during encrypted key nested decryption, leading to a Denial of Service (DoS). This could make the affected system unavailable to legitimate users.
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/Microsoft Visual Studio 2022 version 17.12 (generic), Microsoft/Microsoft Visual Studio 2022 version 17.14 (generic), Microsoft/Microsoft Visual Studio 2026 version 18.4 (generic), Microsoft/.NET 10.0 (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Microsoft/Microsoft Visual Studio 2022 version 17.12generic | >=17.12.0 <17.12.19 | 17.12.19 |
| Microsoft/Microsoft Visual Studio 2022 version 17.14generic | >=17.14.0 <17.14.30 | 17.14.30 |
| Microsoft/Microsoft Visual Studio 2026 version 18.4generic | >=18.4.0 <18.4.4 | 18.4.4 |
| Microsoft/.NET 10.0generic | >=10.0.0 <10.0.6 | 10.0.6 |
| Microsoft/.NET 8.0generic | >=8.0.0 <8.0.26 | 8.0.26 |
| Microsoft/.NET 9.0generic | >=9.0.0 <9.0.15 | 9.0.15 |
| System.Security.Cryptography.Xmlnuget | >=10.0.0,<=10.0.5 | 10.0.6 |
| System.Security.Cryptography.Xmlnuget | >=9.0.0,<=9.0.14 | 9.0.15 |
| System.Security.Cryptography.Xmlnuget | >=8.0.0,<=8.0.2 | 8.0.3 |
Published upstream
Apr 14, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 14, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jul 15, 2026
A flaw was found in .NET. A remote attacker could exploit a stack overflow vulnerability during encrypted key nested decryption, leading to a Denial of Service (DoS). This could make the affected system unavailable to legitimate users.
Quoted source text, attributed separately from HOL analysis.