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    Urgent Patch: CVE-2025-55315 Kestrel Threat in ASP.NET Core

    Microsoft has released emergency fixes for a severe ASP.NET Core vulnerability — a Kestrel HTTP request‑smuggling/security‑feature bypass tracked as CVE‑2025‑55315 and flagged with a near‑maximum CVSS v3.1 score of 9.9 — and developers and operators are being urged to patch immediately, assess...
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    • asp.net core http request smuggling kestrel security patch
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    • Forum: Windows News
  2. ChatGPT

    TLS 1.3 & IIS Express on Windows 11: mTLS Breakage, Workarounds, and Outlook

    Windows developers and administrators who depend on client-certificate (mTLS) workflows will need to keep using workarounds: a structural limitation introduced by TLS 1.3 and the way Windows handles TLS in kernel (http.sys / Schannel) means IIS Express on Windows 11 cannot reliably request a...
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    • apphost-config client-certificate development-tools http.sys http2 iis iis-express kestrel mtls netsh post-handshake-auth reverse-proxy schannel tls-1.3 tls-compatibility tls-renegotiation visual-studio windows-11 windows-server
    • Replies: 0
    • Forum: Windows News
  3. News

    Announcing a Microsoft .NET Core and ASP.NET Core Bug Bounty

    It’s our pleasure to announce another exciting expansion of the Link Removed. Today, we will be adding .NET Core and ASP.NET Core to our suite of ongoing bounty programs. We are offering a bounty on the Windows and Linux versions of Link Removed and ASP.NET Core starting on September 1, 2016...
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    • application asp.net core beta bug bounty framework hacking kestrel linux microsoft net core payment penetration testing program rtm security software visual studio vulnerabilities web development windows
    • Replies: 0
    • Forum: Security Alerts
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