Vulnerability · Published Apr 14, 2026 · Assigned by microsoft
CVE-2026-32226.NET Framework Denial of Service Vulnerability
Medium 5.9
In plain English
A medium-severity race condition in Microsoft .NET Framework 3.5 from Microsoft. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 46% of all known vulnerabilities).
Severity (CVSS 3.1)5.9Medium
Exploit odds (30 days)0.5%top 54.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Concurrent execution using shared resource with improper synchronization ('race condition') in .NET Framework allows an unauthorized attacker to deny service over a network.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Microsoft .NET Framework 3.5 | 3.5.0 – before 2.0.50727.8982 & 3.0.30729.8976 |
| Microsoft | Microsoft .NET Framework 3.5 AND 4.7.2 | 4.7.0 – before 2.0.50727.9068 & 3.0.30729.9065 & 4.7.4141.0 |
| Microsoft | Microsoft .NET Framework 3.5 AND 4.8 | 4.8.0 – before 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 – before 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 – before 4.8.4801.0 |
| Microsoft | Microsoft .NET Framework 4.7.2 | 10.0.0.0 – before 2.0.50727.9068 & 3.0.30729.9065 & 4.7.4141.0 |
| Microsoft | Microsoft .NET Framework 4.8 | 4.8.0 – before 2.0.50727.9181 & 3.0.30729.9165 & 4.8.4801.0 |
| Microsoft | Microsoft .NET Framework 4.8.1 | 4.8.0.0 – before 2.0.50727.9181 & 3.0.30729.9165 & 4.8.9332.0 |
Weakness: CWE-362 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C
References
- .NET Framework Denial of Service Vulnerability vendor-advisory, patch