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.net security

About this tag
The .net security tag on WindowsForum.com covers discussions about vulnerabilities and patches affecting Microsoft's .NET ecosystem, including .NET Framework, .NET Core, ASP.NET Core, and Visual Studio. Recent threads focus on CVEs such as tampering, denial-of-service, elevation-of-privilege, and information-disclosure flaws, with an emphasis on patch prioritization, trust boundaries, and the practical implications for Windows administrators and developers. Topics also touch on related issues in SharePoint and DotNetNuke that intersect with .NET security. The tag serves as a resource for understanding Microsoft's security update guidance, assessing risk from partially disclosed vulnerabilities, and maintaining secure .NET deployments in enterprise environments.
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    CVE-2026-45491 .NET Tampering: Patch Priority for Windows Trust Boundaries

    Microsoft lists CVE-2026-45491 as a .NET tampering vulnerability in its Security Update Guide, but the public record available on June 9, 2026, appears thin: the advisory confirms the vulnerability class and vendor acknowledgement while leaving the deeper exploit mechanics largely undisclosed...
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    • .net security cve 2026 45491 supply chain risks windows patching
    • Replies: 0
    • Forum: Security Alerts
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    CVE-2026-42899: Patch ASP.NET Core Infinite-Loop DoS in .NET 8/9/10 (Important)

    Microsoft disclosed CVE-2026-42899 on May 12, 2026, as an Important-rated ASP.NET Core denial-of-service vulnerability caused by an infinite-loop condition, affecting supported .NET 8.0, .NET 9.0, and .NET 10.0 installations across Windows, Linux, and macOS. The bug is not a data-theft story...
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    • .net 8 patching .net security asp.net core dos cve-2026-42899
    • Replies: 0
    • Forum: Security Alerts
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    CVE-2026-32177 .NET EoP: Patch Discipline Test for Developer and Runtime Estate

    Microsoft listed CVE-2026-32177 as a .NET elevation-of-privilege vulnerability in its April 14, 2026 Security Update Guide, affecting supported .NET and Visual Studio servicing channels and carrying a vendor-confirmed vulnerability record rather than a rumor-driven advisory. That last point...
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    • .net security cve-2026-32177 patch tuesday privilege escalation
    • Replies: 0
    • Forum: Security Alerts
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    CVE-2026-26171 .NET DoS: Why Microsoft Confidence Signals Patch Urgency

    Microsoft’s Security Update Guide entry for CVE-2026-26171 is a reminder that not every .NET vulnerability arrives with a neat exploit narrative. The advisory label says .NET Denial of Service Vulnerability, but the more important signal is Microsoft’s own confidence framing: the company is...
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    • .net security cve 2026 26171 denial of service patch prioritization
    • Replies: 0
    • Forum: Security Alerts
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    CVE-2025-55248 Information Disclosure in .NET and Visual Studio Fixed in Oct 2025

    Microsoft has confirmed an information‑disclosure vulnerability affecting .NET, .NET Framework and Visual Studio — tracked as CVE‑2025‑55248 — and published cumulative security updates on October 14, 2025 to address it; public vulnerability trackers rate the flaw as medium (CVSS 3.1 = 4.8) and...
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    • .net security cve 2025 60724 dotnet encryption strength information disclosure msrc advisory visual studio windows update
    • Replies: 2
    • Forum: Security Alerts
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    Critical SharePoint Exploit Chain Targets Enterprise Systems with Zero-Day Vulnerabilities

    A newly disclosed exploit chain targeting Microsoft SharePoint servers is sending shockwaves across enterprise IT and cybersecurity circles, revealing a sophisticated blend of zero-day and known vulnerabilities that enable cyber attackers to gain near-total control of systems. Security agencies...
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    • .net security cisa credential theft cyber defense cyber threat detection cybersecurity exploit chains machinekey theft patch management powershell payloads sharepoint security siem monitoring sophisticated cyber attacks threat intelligence vulnerability webshell webshell malware yara signatures zero-day vulnerabilities
    • Replies: 0
    • Forum: Security Alerts
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    CVE-2025-52488: Unicode Normalization Bypass in DotNetNuke Threatens Windows Security

    A critical vulnerability in DotNetNuke (DNN), catalogued as CVE-2025-52488, has placed the spotlight on the complex interplay of Windows file system operations, .NET behavior, and subtle Unicode normalization pitfalls. Although DNN is recognized for its robust enterprise-ready architecture and...
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    • .net security credential theft cve-2025-52488 cybersecurity cybersecurity vulnerabilities dotnetnuke file path file security file system normalization ntlm leakage ntlm relay pre-authentication smb vulnerability unc path unicode normalization unicode security risks web application risks windows cms security windows security
    • Replies: 0
    • Forum: Windows News
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    CVE-2025-30399: Critical Windows .NET and Visual Studio Path Traversal Vulnerability

    The landscape of software security is ever-changing, with new vulnerabilities surfacing as attackers discover novel attack vectors and as software grows more complex. One recent discovery sending ripples through the developer and enterprise communities is CVE-2025-30399, a critical remote code...
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    • .net security build environment security cve-2025-30399 cybersecurity dependency devops security dll hijacking patch management remote code execution search path vulnerability secure development security best practices security updates software security software supply chain supply chain security visual studio security vulnerability disclosure windows vulnerabilities
    • Replies: 0
    • Forum: Security Alerts
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    CVE-2025-26646 Vulnerability: Protecting .NET and Visual Studio Build Integrity

    When Microsoft disclosed CVE-2025-26646—a spoofing vulnerability affecting .NET, Visual Studio, and their associated Build Tools—it immediately sent ripples throughout the developer and enterprise communities. At the heart of this vulnerability lies a deceptively simple but potentially...
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    • .net security build artifact integrity build environment build tools security cve-2025-26646 cybersecurity developer security file path microsoft vulnerabilities network security pipeline security secure coding security patch software security spoofing supply chain security threat mitigation visual studio vulnerability awareness
    • Replies: 0
    • Forum: Security Alerts
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    CVE-2025-0731: Securing SMA Sunny Portal Against Critical Remote Code Execution Threats

    In the ever-evolving landscape of cybersecurity, a recent vulnerability identified in SMA's Sunny Portal has raised significant concerns, particularly for organizations operating within the energy sector. This flaw, cataloged as CVE-2025-0731, underscores the critical importance of robust...
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    • .net security automation cve-2025-0731 cyber threats cybersecurity cybersecurity awareness energy sector file upload vulnerability ics security industrial control systems network security operational security patch management remote attack prevention remote code execution security best practices sma sunny portal vulnerability vulnerability alert windows security
    • Replies: 0
    • Forum: Windows News
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