Unauthenticated security feature bypass
Published Oct 13, 2026 · Updated Oct 13, 2026
Certificate validation in Microsoft .NET Framework allows remote attackers to bypass a security feature over a network. Retrieved Microsoft sources do not disclose the affected validation routine or the certificate checks it performs incorrectly. Authentication and user interaction are not required; the precise security feature and application configuration needed to reach the flaw remain unspecified.
Summary
What happened
Certificate validation in Microsoft .NET Framework allows remote attackers to bypass a security feature over a network. Retrieved Microsoft sources do not disclose the affected validation routine or the certificate checks it performs incorrectly. Authentication and user interaction are not required; the precise security feature and application configuration needed to reach the flaw remain unspecified.
The record
- CVE
- CVE-2026-70194
- Published
- Oct 13, 2026
- Updated
- Oct 13, 2026
- Vendor
- Microsoft Corporation
- Product
- .NET 11.0
- Classifications
- CWE-295
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Oct 13, 2026CVE publishedPublication date reported by the CVE source.
- Oct 13, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=11.0.0 <11.0.0-rc.2
What conditions does exploitation require?
What is affected?
Published CVSS scores
No CVSS assessment is available in this record.
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Activity data is delayed. The latest report is Sep 28, 2026.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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