CVE-2026-118147

HIGH CVSS 3.1: 7.4
Updated Oct 31, 2026
Microsoft
Parameter Value
CVSS 7.4 (HIGH)
Affected Versions 15.9.0 — 18.11.3
Fixed In 18.11.3
Type CWE-295 (Improper Certificate Validation)
Vendor Microsoft
Public PoC No

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

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
High
Difficult to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
None
No disruption

CVSS Vector v3.1

Vulnerable Products 4

Configuration From (including) Up to (excluding)
Microsoft Microsoft_Visual_Studio_2026_Version_18.11
cpe:2.3:a:microsoft:microsoft_visual_studio_2026_version_18.11:*:*:*:*:*:*:*:*
18.11.0 18.11.3
Microsoft Microsoft_Visual_Studio_2017_Version_15.9
cpe:2.3:a:microsoft:microsoft_visual_studio_2017_version_15.9:*:*:*:*:*:*:*:*
15.9.0 15.9.84
Microsoft Microsoft_Visual_Studio_2019_Version_16.11
cpe:2.3:a:microsoft:microsoft_visual_studio_2019_version_16.11:*:*:*:*:*:*:*:*
16.11.0 16.11.62
Microsoft Visual_Studio_2022
cpe:2.3:a:microsoft:visual_studio_2022:*:*:*:*:*:*:*:*
17.14.0 17.14.44