CVE-2026-118147
Visual Studio Spoofing Vulnerability
Improper certificate validation in Visual Studio allows an unauthorized attacker to perform spoofing over a network.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
Visual Studio Spoofing Vulnerability
Improper certificate validation in Visual Studio allows an unauthorized attacker to perform spoofing over a network.
- Record
CVE-2026-118147- CVSS 3.1
- 7.4 High
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 - Weakness
- CWE-295
- Updated
- 2026-11-07
EUVDEUVD-2026-114732
Improper certificate validation in Visual Studio allows an unauthorized attacker to perform spoofing over a network.
- Record
EUVD-2026-114732- CVSS 3.1
- 7.4 High
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 - Updated
- 2026-11-07
GitHub AdvisoriesGHSA-hqh8-88g9-j6xw
Improper certificate validation in Visual Studio allows an unauthorized attacker to perform...
Improper certificate validation in Visual Studio allows an unauthorized attacker to perform spoofing over a network.
- Record
GHSA-hqh8-88g9-j6xw- CVSS 3.1
- 7.4 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N - Weakness
- CWE-295
- Updated
- 2026-11-02
NVD
Improper certificate validation in Visual Studio allows an unauthorized attacker to perform spoofing over a network.
- Record
CVE-2026-118147- CVSS 3.1
- 7.4 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N - Weakness
- CWE-295
- Updated
- 2026-11-07
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| facts | CVE List | |
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-118147 is a high vulnerability (CVSS 7.4) in Microsoft Visual Studio 2017 Version 15.9, published October 31, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.61%, the 49th percentile. No source names a fixed version.