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Description

Improper encoding or escaping of output in .NET allows an authorized attacker to perform spoofing over a network.

PUBLISHED Reserved 2026-06-05 | Published 2026-07-14 | Updated 2026-07-14 | Assigner microsoft




MEDIUM: 6.5CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C

Problem types

CWE-116: Improper Encoding or Escaping of Output

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-2026-50659 (.NET Spoofing Vulnerability) vendor-advisory patch

cve.org (CVE-2026-50659)

nvd.nist.gov (CVE-2026-50659)

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