Vulnerability · Published Oct 13, 2026 · Assigned by microsoft
CVE-2026-87697.NET Remote Code Execution Vulnerability
High 8.8
In plain English
A high-severity unsafe deserialization in Microsoft Visual Studio 2022 version 17.14 from Microsoft. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.8% (higher than 58% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)8.8High
Exploit odds (30 days)0.8%top 41.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Deserialization of untrusted data in .NET allows an unauthorized attacker to execute code over a network.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.23 | dotnet10-runtime | 10.0.13-r0 | ALPINE-CVE-2026-87697 |
| Alpine:v3.24 | dotnet10-runtime | 10.0.13-r0 | ALPINE-CVE-2026-87697 |
| Alpine:v3.22 | dotnet8-runtime | 8.0.32-r0 | ALPINE-CVE-2026-87697 |
| Alpine:v3.23 | dotnet8-runtime | 8.0.32-r0 | ALPINE-CVE-2026-87697 |
| Alpine:v3.24 | dotnet8-runtime | 8.0.32-r0 | ALPINE-CVE-2026-87697 |
| Alpine:v3.22 | dotnet9-runtime | 9.0.21-r0 | ALPINE-CVE-2026-87697 |
| Alpine:v3.23 | dotnet9-runtime | 9.0.21-r0 | ALPINE-CVE-2026-87697 |
| Alpine:v3.24 | dotnet9-runtime | 9.0.21-r0 | ALPINE-CVE-2026-87697 |
| NuGet | microsoft.windowsdesktop.app.runtime.win-arm64 | 11.0.0-rc.2 | GHSA-c27m-942f-rcfh |
| NuGet | microsoft.windowsdesktop.app.runtime.win-arm64 | 10.0.13 | GHSA-c27m-942f-rcfh |
| NuGet | microsoft.windowsdesktop.app.runtime.win-arm64 | 9.0.21 | GHSA-c27m-942f-rcfh |
| NuGet | microsoft.windowsdesktop.app.runtime.win-arm64 | 8.0.32 | GHSA-c27m-942f-rcfh |
| NuGet | microsoft.windowsdesktop.app.runtime.win-x64 | 11.0.0-rc.2 | GHSA-c27m-942f-rcfh |
| NuGet | microsoft.windowsdesktop.app.runtime.win-x64 | 8.0.32 | GHSA-c27m-942f-rcfh |
| NuGet | microsoft.windowsdesktop.app.runtime.win-x64 | 10.0.13 | GHSA-c27m-942f-rcfh |
| NuGet | microsoft.windowsdesktop.app.runtime.win-x64 | 9.0.21 | GHSA-c27m-942f-rcfh |
| NuGet | microsoft.windowsdesktop.app.runtime.win-x86 | 10.0.13 | GHSA-c27m-942f-rcfh |
| NuGet | microsoft.windowsdesktop.app.runtime.win-x86 | 9.0.21 | GHSA-c27m-942f-rcfh |
| NuGet | microsoft.windowsdesktop.app.runtime.win-x86 | 8.0.32 | GHSA-c27m-942f-rcfh |
| NuGet | microsoft.windowsdesktop.app.runtime.win-x86 | 11.0.0-rc.2 | GHSA-c27m-942f-rcfh |
| Ubuntu:22.04:LTS | dotnet7 | no fix listed | UBUNTU-CVE-2026-87697 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | .NET 10.0 runtime | 10.0.0 – before 10.0.13 |
| Microsoft | .NET 11.0 runtime | 11.0.0 – before 11.0.0-rc.2 |
| Microsoft | .NET 8.0 runtime | 8.0.0 – before 8.0.32 |
| Microsoft | .NET 9.0 runtime | 9.0.0 – before 9.0.21 |
| Microsoft | Microsoft Visual Studio 2022 version 17.14 | 17.14.0 – before 17.14.42 |
| Microsoft | Microsoft Visual Studio 2026 version 18.10 | 18.10.0 – before 18.10.4 |
Weakness: CWE-502 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
References
- .NET Remote Code Execution Vulnerability vendor-advisory, patch