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CVE-2026-70162

5.9 medium SSVC exploitation: none Published
NVD · CVE.org

A denial of service vulnerability exists when Microsoft Common Object Runtime Library improperly handles web requests. An attacker who successfully exploited this vulnerability could cause a denial of service against a .NET web application. A remote unauthenticated attacker could exploit this vulnerability by issuing specially crafted requests to the .NET application. The update addresses the vulnerability by correcting how the .NET web application handles web requests.

Fix

Microsoft's update · Important

  • Release Notes — System.Security.Cryptography.Pkcs on .NET 10.0 runtime installed on Windows · build 10.0.13
  • Release Notes — System.Security.Cryptography.Pkcs on .NET 11.0 runtime installed on Windows · build 11.0.0-rc.2
  • Release Notes — System.Security.Cryptography.Pkcs on .NET 8.0 runtime installed on Windows · build 8.0.2
  • Release Notes — System.Security.Cryptography.Pkcs on .NET 9.0 runtime installed on Windows · build 9.0.21
  • Release Notes — Microsoft Visual Studio 2026 version 18.10 · build 18.10.4 · restart required
  • Release Notes — Microsoft Visual Studio 2022 version 17.14 · build 17.14.42 · restart required

From the 2026-Oct release note of Microsoft's Security Update Guide, revised 2026-10-28 · Exploitation Less Likely.

Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.

Change history 4

  1. StatusAwaiting Analysis → PublishedNVD modified 2026-10-22 21:57
  2. StatusPublished → Awaiting AnalysisNVD modified 2026-10-22 22:18
  3. StatusAwaiting Analysis → PublishedNVD modified 2026-10-19 19:42
  4. First seenCVSS 5.9NVD modified 2026-10-13 23:17

Affected (CPE criteria) 0

NVD has not attached CPE configurations yet.

References 1