CVE-2026-23666
HIGH EPSS 59.4%
Published Apr 14, 20262mo ago · Modified Jun 17, 20261w ago
7.5 CVSS 3.1
Published Apr 14, 2026 2mo ago
Last Modified Jun 17, 2026 1w ago
Description
Improper input validation in .NET Framework allows an unauthorized attacker to deny service over a network.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High
Threat Intelligence
EPSS Exploit Probability
59.4% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 1
CWE-755
Affected Products 52
| Vendor | Product | Version | Range |
|---|---|---|---|
| microsoft | .net_framework | 3.5 | any |
| microsoft | windows_server_2012 | * | any |
| microsoft | windows_server_2012 | r2 | any |
| microsoft | .net_framework | 3.5 | any |
| microsoft | .net_framework | 4.7.2 | any |
| microsoft | windows_10_1809 | * | any |
| microsoft | windows_10_1809 | * | any |
| microsoft | windows_10_1809 | * | any |
| microsoft | .net_framework | 3.5 | any |
| microsoft | .net_framework | 4.8 | any |
| microsoft | windows_10_1809 | * | any |
| microsoft | windows_10_1809 | * | any |
| microsoft | windows_10_1809 | * | any |
| microsoft | windows_10_21h2 | * | any |
| microsoft | windows_10_21h2 | * | any |
| microsoft | windows_10_21h2 | * | any |
| microsoft | windows_10_22h2 | * | any |
| microsoft | windows_10_22h2 | * | any |
| microsoft | windows_10_22h2 | * | any |
| microsoft | windows_server_2022 | * | any |
| microsoft | .net_framework | 3.5 | any |
| microsoft | .net_framework | 4.8.1 | any |
| microsoft | windows_10_21h2 | * | any |
| microsoft | windows_10_21h2 | * | any |
| microsoft | windows_10_21h2 | * | any |
| microsoft | windows_10_22h2 | * | any |
| microsoft | windows_10_22h2 | * | any |
| microsoft | windows_10_22h2 | * | any |
| microsoft | windows_11_22h2 | * | any |
| microsoft | windows_11_22h2 | * | any |
| microsoft | windows_11_23h2 | * | any |
| microsoft | windows_11_23h2 | * | any |
| microsoft | windows_11_24h2 | * | any |
| microsoft | windows_11_24h2 | * | any |
| microsoft | windows_11_25h2 | * | any |
| microsoft | windows_11_25h2 | * | any |
| microsoft | windows_11_26h1 | * | any |
| microsoft | windows_11_26h1 | * | any |
| microsoft | windows_server_2022 | * | any |
| microsoft | windows_server_2022_23h2 | * | any |
| microsoft | windows_server_2025 | * | any |
| microsoft | .net_framework | 4.6.2 | any |
| microsoft | .net_framework | 4.7 | any |
| microsoft | .net_framework | 4.7.1 | any |
| microsoft | .net_framework | 4.7.2 | any |
| microsoft | windows_server_2012 | * | any |
| microsoft | windows_server_2012 | r2 | any |
| microsoft | .net_framework | 4.8 | any |
| microsoft | windows_10_1607 | * | any |
| microsoft | windows_10_1607 | * | any |
| microsoft | windows_server_2012 | * | any |
| microsoft | windows_server_2012 | r2 | any |
References 1
- msrc.microsoft.com https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-23666
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.