Description
Improper input validation in .NET Framework allows an unauthorized attacker to deny service over a network.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Microsoft | Microsoft .NET Framework 3.5 | 3.5.0 – < 2.0.50727.8982 & 3.0.30729.8976 | 2.0.50727.8982 & 3.0.30729.8976 |
| Microsoft | Microsoft .NET Framework 3.5 AND 4.7.2 | 4.7.0 – < 2.0.50727.9068 & 3.0.30729.9065 & 4.7.4141.0 | 2.0.50727.9068 & 3.0.30729.9065 & 4.7.4141.0 |
| Microsoft | Microsoft .NET Framework 3.5 AND 4.8 | 4.8.0 – < 2.0.50727.9068 & 3.0.30729.9065 & 4.8.4801.0 | 2.0.50727.9068 & 3.0.30729.9065 & 4.8.4801.0 |
| Microsoft | Microsoft .NET Framework 3.5 AND 4.8.1 | 4.8.1 – < 2.0.50727.9181 & 3.0.30729.9165 & 4.8.9332.0 | 2.0.50727.9181 & 3.0.30729.9165 & 4.8.9332.0 |
| Microsoft | Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 | 4.7.0 – < 4.8.4801.0 | 4.8.4801.0 |
| Microsoft | Microsoft .NET Framework 4.8 | 4.8.0 – < 4.8.4801.0 | 4.8.4801.0 |
Advisories 3
- WID-SEC-2026-1100 Microsoft DeveloperTools: Mehrere Schwachstellen BSI CERT-Bund (WID) · May 26, 2026
- MSRC-CVE-2026-23666 .NET Framework Denial of Service Vulnerability Microsoft Security Response Center · Apr 15, 2026
- NCSC-2026-0114 Kwetsbaarheden verholpen in Microsoft Developer tools NCSC-NL (Netherlands) · Apr 14, 2026
References
- .NET Framework Denial of Service Vulnerability vendor-advisory patch