Authentication Bypass by Spoofing in Visual Studio - CVE-2026-70179
Published: October 14, 2026
Vulnerability identifier: #VU154622
CSH Severity: Low
CVSS v4: 7.7 [CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-70179
CWE-ID: CWE-290
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to escalate privileges.
The vulnerability exists due to authentication bypass by spoofing in ASP.NET Core when authenticating users over a network. A remote user can bypass authentication through spoofing to escalate privileges.
Successful exploitation requires a deep understanding of the system and the ability to manipulate its components to trigger a specific condition.
Affected software
Visual Studio
How to mitigate CVE-2026-70179
Install security update from vendor's website.
Visual Studio - update to 17.14.42