CVE-2026-83845 HIGH

CVE-2026-83845: Windows Internet (wininet.dll) Spoofing Vulnerability

Vendor Microsoft
Product Windows 10 Version 21H2
Weakness CWE-290
Published October 13, 2026
Last update October 16, 2026
View on NVD All CVEs

CVSS base score

8.4/10
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N/E:U/RL:O/RC:C

What the vulnerability does

01Description

Improper privilege management in Windows Internet (wininet.dll) allows an authorized attacker to perform spoofing locally.

Key dates

02Disclosure timeline

October 13, 2026 CVE published
October 16, 2026 Record updated