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CVE-2026-96960

7.5 high SSVC exploitation: none Analyzed
NVD · CVE.org

Asymmetric resource consumption (amplification) in .NET allows an unauthorized attacker to deny service over a network.

Fix

Microsoft's update · Important

  • Release Notes — System.Security.Cryptography.Xml on .NET 10.0 runtime installed on Windows, System.Security.Cryptography.Xml on .NET 10.0 runtime installed on Linux, System.Security.Cryptography.Xml on .NET 10.0 runtime installed on Mac OS · build 10.0.13
  • Release Notes — System.Security.Cryptography.Xml on .NET 11.0 runtime installed on Windows, System.Security.Cryptography.Xml on .NET 11.0 runtime installed on Linux, System.Security.Cryptography.Xml on .NET 11.0 runtime installed on Mac OS · build 11.0.0-rc.2
  • Release Notes — System.Security.Cryptography.Xml on .NET 8.0 runtime installed on Windows, System.Security.Cryptography.Xml on .NET 8.0 runtime installed on Linux, System.Security.Cryptography.Xml on .NET 8.0 runtime installed on Mac OS · build 8.0.5
  • Release Notes — System.Security.Cryptography.Xml on .NET 9.0 runtime installed on Windows, System.Security.Cryptography.Xml on .NET 9.0 runtime installed on Linux, System.Security.Cryptography.Xml on .NET 9.0 runtime installed on Mac OS · build 9.0.21
  • KB5127696 — Microsoft .NET Framework 3.5 on Windows 11 version 26H1 · build 2.0.50727.9188 AND 3.0.30729.9171
  • KB5127660 — Microsoft .NET Framework 3.5 on Windows Server 2012 · build 2.0.50727.8987 AND 3.0.30729.8982
  • KB5127664 — Microsoft .NET Framework 3.5 on Windows Server 2012 R2 · build 2.0.50727.8987 AND 3.0.30729.8982
  • KB5126868 — Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 on Windows 10 version 1607, Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2016 · build 2.0.50727.8987 AND 3.0.30729.8982 AND 4.7.4150.0
  • KB5127666 — Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2019, Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 version 1809 · build 2.0.50727.9073 AND 3.0.30729.9070 AND 4.7.4150.0
  • KB5127685 — Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 version 1809, Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2019 · build 2.0.50727.9073 AND 3.0.30729.9070 AND 4.8.4811.0
  • KB5127683 — Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 version 21H2, Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 version 22H2 · build 2.0.50727.9188 AND 3.0.30729.9171 AND 4.8.4811.0
  • KB5127687 — Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2022 · build 2.0.50727.9188 AND 3.0.30729.9171 AND 4.8.4811.0
  • KB5127667 — Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2012 · build 4.7.4150.0
  • KB5127668 — Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2012 R2 · build 4.7.4150.0
  • KB5127684 — Microsoft .NET Framework 4.8 on Windows 10 version 1607, Microsoft .NET Framework 4.8 on Windows Server 2016 · build 4.8.4811.0
  • KB5127686 — Microsoft .NET Framework 4.8 on Windows Server 2012 · build 4.8.4811.0
  • KB5127688 — Microsoft .NET Framework 4.8 on Windows Server 2012 R2 · build 4.8.4811.0
  • KB5127689 — Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 10 version 21H2, Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 10 version 22H2 · build 2.0.50727.9188 AND 3.0.30729.9171 AND 4.8.9363.0
  • KB5127690 — Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 11 version 24H2, Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 11 version 25H2, Microsoft .NET Framework 3.5 AND 4.8.1 on Windows Server 2025 · build 2.0.50727.9188 AND 3.0.30729.9171 AND 4.8.9363.0
  • KB5127691 — Microsoft .NET Framework 4.8.1 on Windows 11 version 26H1 · build 4.8.9363.0
  • KB5127692 — Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 11 version 23H2 · build 2.0.50727.9188 AND 3.0.30729.9171 AND 4.8.9363.0
  • KB5127693 — Microsoft .NET Framework 3.5 AND 4.8.1 on Windows Server 2022 · build 2.0.50727.9188 AND 3.0.30729.9171 AND 4.8.9363.0
  • KB5127694 — Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 11 version 26H2 · build 2.0.50727.9188 AND 3.0.30729.9171 AND 4.8.10008.0

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

Patch, vendor advisory and mitigation references on NVD 1

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

Change history 3

  1. Cpes+16 CPE criteria (now 16)NVD modified 2026-10-16 19:32
  2. StatusUndergoing Analysis → AnalyzedNVD modified 2026-10-16 19:32
  3. First seenCVSS 7.5NVD modified 2026-10-13 20:19

Affected (CPE criteria) 16

  • cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*
  • cpe:2.3:a:microsoft:.net:11.0.0:preview1:*:*:*:*:*:*
  • cpe:2.3:a:microsoft:.net:11.0.0:preview2:*:*:*:*:*:*
  • cpe:2.3:a:microsoft:.net:11.0.0:preview3:*:*:*:*:*:*
  • cpe:2.3:a:microsoft:.net:11.0.0:preview4:*:*:*:*:*:*
  • cpe:2.3:a:microsoft:.net:11.0.0:preview5:*:*:*:*:*:*
  • cpe:2.3:a:microsoft:.net:11.0.0:preview6:*:*:*:*:*:*
  • cpe:2.3:a:microsoft:.net:11.0.0:preview7:*:*:*:*:*:*
  • cpe:2.3:a:microsoft:.net:11.0.0:rc1:*:*:*:*:*:*
  • cpe:2.3:a:microsoft:.net_framework:4.8.1:*:*:*:*:*:*:*
  • cpe:2.3:a:microsoft:.net_framework:4.8:*:*:*:*:*:*:*
  • cpe:2.3:a:microsoft:.net_framework:4.6.2:*:*:*:*:*:*:*
  • cpe:2.3:a:microsoft:.net_framework:4.7:*:*:*:*:*:*:*
  • cpe:2.3:a:microsoft:.net_framework:4.7.1:*:*:*:*:*:*:*
  • cpe:2.3:a:microsoft:.net_framework:4.7.2:*:*:*:*:*:*:*
  • cpe:2.3:a:microsoft:.net_framework:3.5:*:*:*:*:*:*:*

References 1