CVE-2026-58649
.NET Information Disclosure Vulnerability
CVSS Score
6.5
EPSS Score
0.0%
EPSS Percentile
0th
Origin validation error in .NET allows an unauthorized attacker to disclose information over a network.
| Vendor | microsoft |
| Product | .net 10.0 |
| Ecosystems | |
| Industries | TechnologyEnterprise |
| Published | Sep 8, 2026 |
| Last Updated | Sep 15, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
Microsoft / .NET 10.0
10.0.0 < 10.0.111, 10.0.400
Microsoft / .NET 11.0
11.0.0 < 11.0 RC1
Microsoft / .NET 8.0
8.0.0 < 8.0.130, 8.0.424
Microsoft / .NET 9.0
9.0.0 < 9.0.120, 9.0.317
Microsoft / Microsoft Visual Studio 2022 version 17.14
17.14.0 < 17.14.40
Microsoft / Microsoft Visual Studio 2026 version 18.9
18.9.0 < 18.9.3