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Vulnerability record · CVE-2026-50646 · published 14 July 2026

CVE-2026-50646: Microsoft .net framework deserialization of untrusted data vulnerability

Microsoft · .Net Framework

Protection mechanism failure in .NET Framework allows an unauthorized attacker to execute code locally.

7.8 CVSS 3.1 High EPSS 4.0% · top 9.8% CWE-502 · Deserialization of untrusted dataCWE-693 · CWE-693
7.8CVSS 3.1 base score
4.0%EPSS exploitation probability, 30 days
NoNot in CISA KEV
4Affected product versions listed by NVD
1References
24 Jul 2026Last modified by NVD

Description

Protection mechanism failure in .NET Framework allows an unauthorized attacker to execute code locally.

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

4 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50646 PatchVendor Advisory

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-50646), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.