CVE-2026-118147: high-severity vulnerability in Microsoft Visual Studio 2017 version 15.9
Visual Studio Spoofing Vulnerability
Published · Updated
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.4epss 0.6%
Improper certificate validation in Visual Studio allows an unauthorized attacker to perform spoofing over a network.
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
Affected products
Microsoft · Microsoft Visual Studio 2017 version 15.9Microsoft · Microsoft Visual Studio 2019 version 16.11Microsoft · Microsoft Visual Studio 2022 version 17.14Microsoft · Microsoft Visual Studio 2026 version 18.11Related CVEs — Microsoft Visual Studio 2017 version 15.9
In the same product, most dangerous first.
CVE-2025-55315CRITICALASP.NET Security Feature Bypass VulnerabilityEPSS 67.2%CVE-2025-47959HIGHVisual Studio Remote Code Execution VulnerabilityEPSS 10.9%CVE-2026-50646HIGH.NET Framework Remote Code Execution VulnerabilityEPSS 4.0%CVE-2025-53773HIGHGitHub Copilot and Visual Studio Remote Code Execution VulnerabilityEPSS 3.3%CVE-2026-32178HIGH.NET Spoofing VulnerabilityEPSS 2.3%CVE-2026-32203HIGH.NET and Visual Studio Denial of Service VulnerabilityEPSS 1.9%