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Description

Incorrect authorization in .NET allows an unauthorized attacker to bypass a security feature over a network.

PUBLISHED Reserved 2026-06-04 | Published 2026-07-14 | Updated 2026-07-14 | Assigner microsoft




HIGH: 8.2CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N/E:U/RL:O/RC:C

Problem types

CWE-863: Incorrect Authorization

CWE-302: Authentication Bypass by Assumed-Immutable Data

CWE-636: Not Failing Securely ('Failing Open')

Product status

10.0.0 (custom) before 10.0.6
affected

8.0.0 (custom) before 8.0.29
affected

9.0.0 (custom) before 9.0.18
affected

17.12.0 (custom) before 17.12.22
affected

17.14.0 (custom) before 17.14.36
affected

18.0 (custom) before 18.7.4
affected

References

msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50528 (.NET Security Feature Bypass Vulnerability) vendor-advisory patch

cve.org (CVE-2026-50528)

nvd.nist.gov (CVE-2026-50528)

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