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Description

Improper verification of cryptographic signature in .NET allows an unauthorized attacker to bypass a security feature over a network.

PUBLISHED Reserved 2026-05-18 | Published 2026-07-14 | Updated 2026-07-14 | Assigner microsoft




HIGH: 8.1CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

Problem types

CWE-347: Improper Verification of Cryptographic Signature

CWE-345: Insufficient Verification of Data Authenticity

Product status

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-2026-47304 (.NET Security Feature Bypass Vulnerability) vendor-advisory patch

cve.org (CVE-2026-47304)

nvd.nist.gov (CVE-2026-47304)

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