Login Request a demo
High severity · published Oct 13, 2026
CVE-2026-102870
ASP.NET Core Remote Code Execution Vulnerability
8.8
CVSS
0.9%
EPSS
No
On KEV
Description
Improper control of generation of code ('code injection') in ASP.NET Core allows an unauthorized attacker to execute code over a network.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.9% · higher than 60% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
N1
.NET 10.0 installed on Linux · Microsoft
10.0.0 before 10.0.403 · source: vendor
N1
.NET 10.0 installed on Mac OS · Microsoft
10.0.0 before 10.0.403 · source: vendor
N1
.NET 10.0 installed on Windows · Microsoft
10.0.0 before 10.0.403 · source: vendor
N1
.NET 11.0 installed on Linux · Microsoft
11.0.0-preview.1 before 11.0.100-rc.3 · source: vendor
N1
.NET 11.0 installed on Mac OS · Microsoft
11.0.0-preview.1 before 11.0.100-rc.3 · source: vendor
N1
.NET 11.0 installed on Windows · Microsoft
11.0.0-preview.1 before 11.0.100-rc.3 · source: vendor
MV
Microsoft Visual Studio 2019 version 16.11 · Microsoft
16.11.0 before 16.11.61 · source: vendor
MV
Microsoft Visual Studio 2022 version 17.14 · Microsoft
17.14.0 before 17.14.43 · source: vendor
MV
Microsoft Visual Studio 2026 version 18.10 · Microsoft
18.10.0 before 18.10.4 · source: vendor
MV
Microsoft Visual Studio 2026 version 18.11 · Microsoft
18.11.0 before 18.11.2 · source: vendor
MV
Microsoft Visual Studio 2026 version 18.12 · Microsoft
18.12.0 before 18.12 Insiders 3 · source: vendor
MI
Microsoft.AspNetCore.Components.WebAssembly.DevServer · Microsoft
11.0.0-preview.1 before 10.0.14 · source: vendor
Affected product
N1
.NET 10.0 installed on Linux
Microsoft
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-102870
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-102870
vendor-advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-102870
More from .NET 10.0 installed on Linux
8.1
CVE-2026-70197
.NET and Visual Studio Remote Code Execution Vulnerability