CVE-2026-83845 Windows Internet - Spoofing

Windows Internet (wininet.dll) contains an improper privilege management vulnerability that allows authorized local attackers to perform spoofing, exploit requires local access with authorization.

CVSS base score 8.4 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.29% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Spoofing
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
Published
13 October 2026
Updated
15 October 2026
Weakness
CWE-290

Vendor fix

Update to the latest version of Windows Internet (wininet.dll).

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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