CVE-2026-83845
Windows Internet (wininet.dll) Spoofing Vulnerability
Improper privilege management in Windows Internet (wininet.dll) allows an authorized attacker to perform spoofing locally.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
Windows Internet (wininet.dll) Spoofing Vulnerability
Improper privilege management in Windows Internet (wininet.dll) allows an authorized attacker to perform spoofing locally.
- Record
CVE-2026-83845- CVSS 3.1
- 8.4 High
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 - Weakness
- CWE-290
- Updated
- 2026-11-10
EUVDEUVD-2026-100013
Improper privilege management in Windows Internet (wininet.dll) allows an authorized attacker to perform spoofing locally.
- Record
EUVD-2026-100013- CVSS 3.1
- 8.4 High
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 - Updated
- 2026-11-10
GitHub AdvisoriesGHSA-pp9h-jmw7-x6cw
Improper privilege management in Windows Internet (wininet.dll) allows an authorized attacker to...
Improper privilege management in Windows Internet (wininet.dll) allows an authorized attacker to perform spoofing locally.
- Record
GHSA-pp9h-jmw7-x6cw- CVSS 3.1
- 8.4 High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N - Weakness
- CWE-290
- Updated
- 2026-11-02
NVD
Improper privilege management in Windows Internet (wininet.dll) allows an authorized attacker to perform spoofing locally.
- Record
CVE-2026-83845- CVSS 3.1
- 8.4 High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N - Weakness
- CWE-290
- Updated
- 2026-11-02
Affected products
- microsoft windows 10 version 21h2
- microsoft windows 10 version 22h2
- microsoft windows 11 version 23h2
- microsoft windows 11 version 24h2
- microsoft windows 11 version 25h2
- microsoft windows 11 version 26h1
- microsoft windows 11 version 26h2
- microsoft windows server 2022
- microsoft windows server 2025
- microsoft windows server 2025 (server core installation)
- microsoft windows 10 21h2
- microsoft windows 10 22h2
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-2026-83845 is a high vulnerability (CVSS 8.4) in Microsoft Windows 10 Version 21h2, published October 13, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.32%, the 25th percentile. No source names a fixed version.