What is CVE-2026-50649?

CVE-2026-50649 is a high-severity vulnerability in Microsoft Visual Studio 2022 Version 17.12, classified under Deserialization of Untrusted Data. CVSS score: 7.8/10. Published 2026-07-14.

How severe is CVE-2026-50649?

High severity. CVSS v3 base score is 7.8 out of 10.

Deserialization in Microsoft Visual Studio 2022 Version 17.12

CVE-2026-50649

Deserialization of untrusted data in .NET allows an unauthorized attacker to execute code locally.

Vulnerability class: Insecure Deserialization

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

Microsoft Visual Studio 2022 Version 17.12 — versions 17.12.0
Microsoft Visual Studio 2022 Version 17.14 — versions 17.14.0
Microsoft Visual Studio 2026 Version 18.7 — versions 18.0
Microsoft .Net 8.0 — versions 8.0.0
Microsoft .Net 9.0 — versions 9.0.0

Weakness classification (CWE)

CWE-502 — Deserialization of Untrusted Data

References

secure@microsoft.com (vendor-advisory, patch)

Frequently asked questions

What is CVE-2026-50649?: CVE-2026-50649 is a high-severity vulnerability in Microsoft Visual Studio 2022 Version 17.12, classified under Deserialization of Untrusted Data. CVSS score: 7.8/10. Published 2026-07-14.
How severe is CVE-2026-50649?: High severity. CVSS v3 base score is 7.8 out of 10.