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 ↗

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

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

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