BaselineWatch
Desk

CVE-2026-87697

8.8 high SSVC exploitation: none Published

Deserialization of untrusted data in .NET allows an unauthorized attacker to execute code over a network.

Fix

Microsoft's update · Important

  • Release Notes — .NET 11.0 runtime installed on Windows · build 11.0.0-rc.2
  • KB5130036 — .NET 10.0 runtime installed on Windows · build 10.0.13 · restart required
  • KB5130034 — .NET 8.0 runtime installed on Windows · build 8.0.32 · restart required
  • KB5130035 — .NET 9.0 runtime installed on Windows · build 9.0.21 · restart required
  • Release Notes — Microsoft Visual Studio 2022 version 17.14 · build 17.14.42 · restart required
  • Release Notes — Microsoft Visual Studio 2026 version 18.10 · build 18.10.4 · 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. StatusUndergoing Analysis → PublishedNVD modified 2026-10-22 21:50
  2. StatusPublished → Undergoing AnalysisNVD modified 2026-10-22 22:19
  3. StatusUndergoing Analysis → PublishedNVD modified 2026-10-19 19:35
  4. First seenCVSS 8.8NVD modified 2026-10-14 04:18

Affected (CPE criteria) 0

NVD has not attached CPE configurations yet.

References 1