Recorded 22 Oct 2026 at 22:02 UTC. This is what ChangeIntel recorded, including the title, summary, facts and links. It is not a statement of the source's current position. See the latest record.

The historical field “Public exploit code” recorded Nuclei detection-template membership. It did not establish exploit availability. The original recorded fields remain below.

The historical “Publicly disclosed: No” field could represent a missing MSRC assessment. It does not establish that the vulnerability was undisclosed. The original recorded fields remain below.

CVEMicrosoft Security Response Center

.NET Framework Security Feature Bypass Vulnerability

Improper certificate validation in .NET Framework allows an unauthorized attacker to bypass a security feature over a network.

What it said

CVE: CVE-2026-70194
Severity: Important
CVSS base score: 6.5
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C
Impact: Security Feature Bypass
Exploitation detected: Not reported by MSRC
Publicly disclosed: No
Exploitability: Exploitation Less Likely
Component: .NET Framework
Weakness: CWE-295: Improper Certificate Validation
Issued by: Microsoft
Customer action: Required: apply the update
Affected products: .NET 11.0 runtime installed on Linux, .NET 11.0 runtime installed on Mac OS, Microsoft Visual Studio 2022 version 17.14, Microsoft Visual Studio 2026 version 18.10
Updates that fix it: No KB listed
CISA KEV: Not listed in the collected catalog
EPSS: 0.4%; scored 22 Oct 2026
Public exploit code: No Nuclei template listed
Published: 13 Oct 2026 07:00 UTC
Last revised: 13 Oct 2026 07:00 UTC
Revision note: Information published.

Recorded links

Source evidence when recorded

Microsoft security releases: Complete at observationRead 22 Oct 2026 at 22:02 UTC
CISA KEV: Complete at observationRead 22 Oct 2026 at 22:02 UTC
FIRST EPSS: Complete at observationRead 22 Oct 2026 at 22:02 UTC
Public detection templates (Nuclei): Complete at observationRead 22 Oct 2026 at 22:02 UTC

Coverage describes the sources at this observation. A complete read then does not establish their current position.

What changed

Affected products: .NET 11.0 installed on Linux, .NET 11.0 installed on Mac OS, Microsoft Visual Studio 2022 version 17.14, Microsoft Visual Studio 2026 version 18.10 → .NET 11.0 runtime installed on Linux, .NET 11.0 runtime installed on Mac OS, Microsoft Visual Studio 2022 version 17.14, Microsoft Visual Studio 2026 version 18.10
22 Oct 2026

Page history

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Cite this version

Field-level log (10)

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22 Oct 2026 · 22:02:57 UTC Affected products.NET 11.0 installed on Linux, .NET 11.0 installed on Mac OS, Microsoft Visual Studio 2022 version 17.14, Microsoft Visual Studio 2026 version 18.10 → .NET 11.0 runtime installed on Linux, .NET 11.0 runtime installed on Mac OS, Microsoft Visual Studio 2022 version 17.14, Microsoft Visual Studio 2026 version 18.10
22 Oct 2026 · 17:33:15 UTC EPSS0.4%; scored 21 Oct 2026 → 0.4%; scored 22 Oct 2026
21 Oct 2026 · 21:47:24 UTC EPSS0.4%; scored 20 Oct 2026 → 0.4%; scored 21 Oct 2026
20 Oct 2026 · 20:53:31 UTC EPSS0.4%; scored 19 Oct 2026 → 0.4%; scored 20 Oct 2026
19 Oct 2026 · 15:12:40 UTC EPSS0.4%; scored 18 Oct 2026 → 0.4%; scored 19 Oct 2026
18 Oct 2026 · 14:54:30 UTC EPSS0.4%; scored 16 Oct 2026 → 0.4%; scored 18 Oct 2026
18 Oct 2026 · 14:54:30 UTC Link: October 2026/security?release=2026-Oct#cves
16 Oct 2026 · 16:13:25 UTC EPSS0.4%; scored 15 Oct 2026 → 0.4%; scored 16 Oct 2026
15 Oct 2026 · 21:30:54 UTC EPSS0.4%; scored 14 Oct 2026 → 0.4%; scored 15 Oct 2026
15 Oct 2026 · 01:07:54 UTC EPSSNot scored → 0.4%; scored 14 Oct 2026