Net Sdk
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Origin validation error (CWE-346) in Microsoft .NET enables network-based information disclosure where an unauthenticated remote attacker can read sensitive data from a .NET application by exploiting improper validation of request origins. Affected are multiple active .NET release trains (8.0, 9.0, 10.0, 11.0 RC1) and Microsoft Visual Studio 2022 and 2026 where bundled .NET runtimes are included. The CVSS vector (UI:R) indicates user interaction is required, consistent with a cross-origin attack pattern where a victim must visit an attacker-controlled page that triggers the malicious cross-origin request. No public exploit code or CISA KEV listing has been identified at time of analysis.
CVE-2025-49015 is a security vulnerability (CVSS 4.9). Remediation should follow standard vulnerability management procedures.
Origin validation error (CWE-346) in Microsoft .NET enables network-based information disclosure where an unauthenticated remote attacker can read sensitive data from a .NET application by exploiting improper validation of request origins. Affected are multiple active .NET release trains (8.0, 9.0, 10.0, 11.0 RC1) and Microsoft Visual Studio 2022 and 2026 where bundled .NET runtimes are included. The CVSS vector (UI:R) indicates user interaction is required, consistent with a cross-origin attack pattern where a victim must visit an attacker-controlled page that triggers the malicious cross-origin request. No public exploit code or CISA KEV listing has been identified at time of analysis.
CVE-2025-49015 is a security vulnerability (CVSS 4.9). Remediation should follow standard vulnerability management procedures.