CVE-2026-23666
High
Description
Improper input validation in .NET Framework allows an unauthorized attacker to deny service over a network.
SeverityHigh
CVSS7.5
Exploit probability—
Product
Microsoft .net Framework
PublishedApr 14, 2026
First seenApr 14, 2026
Weakness typeCWE-755CWE-755
How to fix
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| microsoft .net_framework | 3.5, 4.7.2, 4.8, 4.8.1, 4.6.2, 4.7, 4.7.1 | — |
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