.NET
CVE-2026-87697 — .NET Remote Code Execution Vulnerability
Executive Summary
Deserialization of untrusted data in .NET allows an unauthorized attacker to execute code over a network.
Overview
8.8
CVSS HIGH
Important
MS Severity
Not Exploited
MS Exploit Status
Less Likely
MS Exploit Likelihood
CVSS Vector
ATTACK VECTOR
Network
ATTACK COMPLEXITY
Low
PRIVILEGES REQUIRED
None
USER INTERACTION
Required
SCOPE
Unchanged
CONFIDENTIALITY
High
INTEGRITY
High
AVAILABILITY
High
EXPLOIT CODE MATURITY
Unproven
REMEDIATION LEVEL
Official Fix
REPORT CONFIDENCE
Confirmed
Temporal Score: 7.7
EPSS Score
No EPSS score available for this CVE.
View on FIRST.orgAffected Products
6 affected products
| Product | KB Article | Severity | Impact | Restart Required |
|---|---|---|---|---|
| .NET 10.0 installed on Windows | Release Notes (Security Update) |
Important | Remote Code Execution | Yes |
| .NET 11.0 installed on Windows | Release Notes (Security Update) |
Important | Remote Code Execution | Unknown |
| .NET 8.0 installed on Windows | Release Notes (Security Update) |
Important | Remote Code Execution | Yes |
| .NET 9.0 installed on Windows | Release Notes (Security Update) |
Important | Remote Code Execution | Yes |
| Microsoft Visual Studio 2022 version 17.14 | Release Notes (Security Update) |
Important | Remote Code Execution | Yes |
| Microsoft Visual Studio 2026 version 18.10 | Release Notes (Security Update) |
Important | Remote Code Execution | Yes |
Patches
1 patch
| Article | Type | Restart |
|---|---|---|
Release Notes |
Security Update | Yes |
Exploits & PoC
No public exploit or PoC has been linked for this CVE yet. When available, references are sourced from public repositories and may be unverified or non-functional — review carefully before use.
Detection Rules
No public Sigma or Nuclei detection rule has been mapped to this CVE yet. Coverage is concentrated on exploited / high-profile vulnerabilities; check SigmaHQ for updates.
Acknowledgments
41ae55e9310ff27fa6f26af4727e5590
References
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