---
title: "CVE-2026-118147: Visual Studio - Spoofing"
description: "Visual Studio contains an improper certificate validation vulnerability caused by inadequate certificate checks, letting unauthorized attackers perform network spoofing, exploit requires network access."
url: https://panop.io/threat-heartbeat/CVE-2026-118147/
---

# CVE-2026-118147 Visual Studio - Spoofing

Visual Studio contains an improper certificate validation vulnerability caused by inadequate certificate checks, letting unauthorized attackers perform network spoofing, exploit requires network access.

CVSS base score 7.4 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-118147)

## Details

Type

Spoofing

Impact

Man In The Middle

CVSS vector

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

Published

31 October 2026

Updated

1 November 2026

Weakness

[CWE-295](https://cwe.mitre.org/data/definitions/295.html)

## Vendor fix

Update to the latest version of Visual Studio.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-118147](https://nvd.nist.gov/vuln/detail/CVE-2026-118147)
- [https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-118147](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-118147)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

Panop answers these inside your environment, for this CVE and every other finding.

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