CVE-2026-118147— Visual Studio Spoofing Vulnerability

Quick assessment

Affected

Microsoft Microsoft Visual Studio 2017 version 15.9

Exploitation

No confirmed in-the-wild exploitation; assess based on exposure

Recommended action

Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Visual Studio 中的证书验证不当问题，使得未经授权的攻击者能够在网络上实施欺骗攻击。

CVSS 7.4 · High Updated Nov 01, 2026

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 4

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

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Vulnerability Information

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Vulnerability Title

Visual Studio Spoofing Vulnerability

Source: CVE Program / CVE List V5

Vulnerability Description

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

Source: CVE Program / CVE List V5

CVSS Information

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

Source: CVE Program / CVE List V5

Vulnerability Type

证书验证不恰当

Source: CVE Program / CVE List V5

Affected Products

Vendor	Product	Affected Versions	CPE
Microsoft	Microsoft Visual Studio 2017 version 15.9	15.9.0 ~ 15.9.84	-
Microsoft	Microsoft Visual Studio 2019 version 16.11	16.11.0 ~ 16.11.62	-
Microsoft	Microsoft Visual Studio 2022 version 17.14	17.14.0 ~ 17.14.44	-
Microsoft	Microsoft Visual Studio 2026 version 18.11	18.11.0 ~ 18.11.3	-

II. Public POCs for CVE-2026-118147

#	POC Description	Source Link	Shenlong Link

AI-Generated POC Premium

No public POC found.

III. Intelligence Information for CVE-2026-118147

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Other References for CVE-2026-118147 (1)

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-118147 vendor-advisory patch

https://www.cve.org/CVERecord?id=CVE-2026-118147

IV. Related Vulnerabilities

Same vendor: Microsoft

Same weakness: CWE-295