What is CVE-2026-114156?

CVE-2026-114156 is a medium-severity vulnerability in Microsoft Visual Studio 2026 Version 18.12, classified under CWE-41. CVSS score: 6.5/10. Published 2026-11-10.

How severe is CVE-2026-114156?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in Microsoft Visual Studio 2026 Version 18.12

CVE-2026-114156

Improper input validation in ASP.NET Core allows an unauthorized attacker to bypass a security feature over a network.

Published 2026-11-10 · last modified 2026-11-10.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Microsoft Visual Studio 2026 Version 18.12
Microsoft .Net 11.0 Installed On Linux
Microsoft .Net 11.0 Installed On Mac OS
Microsoft .Net 11.0 Installed On Windows

Weakness classification (CWE)

CWE-41

References

msrc.microsoft.com/update-guide/vulnerability/CVE-2026-114156 (vendor-advisory, patch)

Frequently asked questions

What is CVE-2026-114156?: CVE-2026-114156 is a medium-severity vulnerability in Microsoft Visual Studio 2026 Version 18.12, classified under CWE-41. CVSS score: 6.5/10. Published 2026-11-10.
How severe is CVE-2026-114156?: Medium severity. CVSS v3 base score is 6.5 out of 10.