Improper certificate validation in Visual Studio allows an unauthorized attacker to perform spoofing over a network.

No CVSS v4.0

Attack Vector Network

Attack Complexity High

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Microsoft Microsoft Visual Studio 2017 version 15.9 affected
Version Status Constraints
15.9.0 affected < 15.9.84
Microsoft Microsoft Visual Studio 2019 version 16.11 affected
Version Status Constraints
16.11.0 affected < 16.11.62
Microsoft Microsoft Visual Studio 2022 version 17.14 affected
Version Status Constraints
17.14.0 affected < 17.14.44
Microsoft Microsoft Visual Studio 2026 version 18.11 affected
Version Status Constraints
18.11.0 affected < 18.11.3

No data.

No data.

No data.

Project Subscriptions

Vendors Products
Microsoft Subscribe
Microsoft Visual Studio 2017 Version 15.9 Subscribe
Microsoft Visual Studio 2019 Version 16.11 Subscribe
Microsoft Visual Studio 2026 Version 18.11 Subscribe
Visual Studio 2022 Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-118147 cve-icon
History

Sat, 31 Oct 2026 18:30:00 +0000

Type Values Removed Values Added
Description Improper certificate validation in Visual Studio allows an unauthorized attacker to perform spoofing over a network.
Title Visual Studio Spoofing Vulnerability
First Time appeared Microsoft
Microsoft microsoft Visual Studio 2017 Version 15.9
Microsoft microsoft Visual Studio 2019 Version 16.11
Microsoft microsoft Visual Studio 2026 Version 18.11
Microsoft visual Studio 2022
Weaknesses CWE-295
CPEs cpe:2.3:a:microsoft:microsoft_visual_studio_2017_version_15.9:*:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:microsoft_visual_studio_2019_version_16.11:*:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:microsoft_visual_studio_2026_version_18.11:*:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:visual_studio_2022:*:*:*:*:*:*:*:*
Vendors & Products Microsoft
Microsoft microsoft Visual Studio 2017 Version 15.9
Microsoft microsoft Visual Studio 2019 Version 16.11
Microsoft microsoft Visual Studio 2026 Version 18.11
Microsoft visual Studio 2022
References
Metrics cvssV3_1

{'score': 7.4, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: microsoft

Published:

Updated: 2026-10-31T18:13:37.059Z

Reserved: 2026-10-27T17:35:36.727Z

Link: CVE-2026-118147

cve-icon Vulnrichment

No data.

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses