Summary
Impact: Security Feature Bypass. Microsoft rating: Important. Not known to be exploited — Exploitation Less Likely. Customer action: Required.
Details
What kind of security feature could be bypassed by successfully exploiting this vulnerability?
The authentication feature could be bypassed as this vulnerability allows impersonation.
Security updates
10.0.10 — https://support.microsoft.com/kb/5104034
8.0.29 — https://support.microsoft.com/kb/5104032
9.0.18 — https://support.microsoft.com/kb/5104033
17.14.36 — https://learn.microsoft.com/en-us/visualstudio/releases/2022/release-notes
4.8.4803.0 — https://support.microsoft.com/help/5101007
4.8.4803.0 — https://support.microsoft.com/help/5101009
4.8.4803.0 — https://support.microsoft.com/help/5101011
2.0.50727.9069 & 3.0.30729.9067 & 4.8.4803.0 — https://support.microsoft.com/help/5101008
2.0.50727.9182 & 3.0.30729.9168 & 4.8.4803.0 — https://support.microsoft.com/help/5101010
2.0.50727.9182 & 3.0.30729.9168 & 4.8.4803.0 — https://support.microsoft.com/help/5101006
2.0.50727.9069 & 3.0.30729.9067 & 4.7.4143.0 — https://support.microsoft.com/help/5100989
2.0.50727.8983 & 3.0.30729.8978 & 4.7.4143.0 — https://support.microsoft.com/help/5099535
4.7.4143.0 — https://support.microsoft.com/help/5100990
4.7.4143.0 — https://support.microsoft.com/help/5100991
2.0.50727.9182 & 3.0.30729.9168 & 4.8.9339.0 — https://support.microsoft.com/help/5101005
2.0.50727.9182 & 3.0.30729.9168 & 4.8.9339.0 — https://support.microsoft.com/help/5101000
2.0.50727.9182 & 3.0.30729.9168 & 4.8.9340.0 — https://support.microsoft.com/help/5101003
2.0.50727.9182 & 3.0.30729.9168 & 4.8.9340.0 — https://support.microsoft.com/help/5100998
2.0.50727.9182 & 3.0.30729.9168 & 4.8.9339.0 — https://support.microsoft.com/help/5101004
2.0.50727.9182 & 3.0.30729.9168 & 4.8.9339.0 — https://support.microsoft.com/help/5101001
2.0.50727.8983 & 3.0.30729.8978 — https://support.microsoft.com/help/5100984
2.0.50727.8983 & 3.0.30729.8978 — https://support.microsoft.com/help/5100985
4.8.9340.0 — https://support.microsoft.com/help/5101002
2.0.50727.9182 & 3.0.30729.9168 — https://support.microsoft.com/help/5101014
18.7.4 — https://learn.microsoft.com/en-us/visualstudio/releases/2026/release-notes
Vulnerabilities 1
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High 8.1
.NET Security Feature Bypass Vulnerability
Improper verification of cryptographic signature in .NET allows an unauthorized attacker to bypass a security feature over a network.
Revision history
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#3
Updated product information in the Software Update table. This is an informational change only.
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#2
Updated product information in the Software Update table. This is an informational change only.
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#1
Information published.
References
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CVE-2026-47304 .NET Security Feature Bypass Vulnerability - HTML
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-47304
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Microsoft Exploitability Index
https://www.microsoft.com/en-us/msrc/exploitability-index?rtc=1
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Microsoft Support Lifecycle
https://support.microsoft.com/lifecycle
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Common Vulnerability Scoring System
https://www.first.org/cvss