What’s Vulnerable › Vulnerabilities
CVE-2026-70179: ASP.NET Core Elevation of Privilege Vulnerability
- Severity: high (CVSS 7.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.6% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-10-13 · updated 2026-10-31
- Weakness: CWE-290
Description
Authentication bypass by spoofing in ASP.NET Core allows an authorized attacker to elevate privileges over a network.
Affected products
- Microsoft.AspNetCore.Authentication.Negotiate: from 10.0.0 before 10.0.13 — fixed in 10.0.13
- Microsoft Visual Studio 2026 version 18.10: from 18.10.0 before 18.10.4 — fixed in 18.10.4
- Microsoft Visual Studio 2022 version 17.14: from 17.14.0 before 17.14.42 — fixed in 17.14.42
How to fix
Upgrade to a fixed version: Microsoft.AspNetCore.Authentication.Negotiate 10.0.13; Microsoft Visual Studio 2026 version 18.10 18.10.4; Microsoft Visual Studio 2022 version 17.14 17.14.42. Check the vendor advisory for mitigations.
References
Get alerted when CVE-2026-70179 or the next vulnerability affects your stack