CVE-2026-26170: CWE-20: Improper Input Validation in Microsoft Windows 10 Version 1607
Improper input validation in Microsoft PowerShell allows an authorized attacker to elevate privileges locally.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-26170) arises from improper input validation in Microsoft PowerShell on Windows 10 Version 1607 (build 10.0.14393.0). It enables an attacker with local authorized access to escalate privileges, potentially gaining higher system rights. The CVSS 3.1 vector indicates low attack complexity, no user interaction required, and high impact on confidentiality, integrity, and availability. Microsoft has published an official fix to remediate this vulnerability.
Potential Impact
An authorized local attacker can exploit this vulnerability to elevate privileges on the affected Windows 10 system, potentially gaining administrative rights. This could lead to full system compromise, including unauthorized access to sensitive data and disruption of system operations. There are no known exploits in the wild at this time.
Mitigation Recommendations
Microsoft has released an official fix for this vulnerability. It is recommended to apply the security update provided by Microsoft as soon as possible to remediate the issue. No additional mitigation steps are indicated by the vendor advisory.
CVE-2026-26170: CWE-20: Improper Input Validation in Microsoft Windows 10 Version 1607
Description
Improper input validation in Microsoft PowerShell allows an authorized attacker to elevate privileges locally.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-26170) arises from improper input validation in Microsoft PowerShell on Windows 10 Version 1607 (build 10.0.14393.0). It enables an attacker with local authorized access to escalate privileges, potentially gaining higher system rights. The CVSS 3.1 vector indicates low attack complexity, no user interaction required, and high impact on confidentiality, integrity, and availability. Microsoft has published an official fix to remediate this vulnerability.
Potential Impact
An authorized local attacker can exploit this vulnerability to elevate privileges on the affected Windows 10 system, potentially gaining administrative rights. This could lead to full system compromise, including unauthorized access to sensitive data and disruption of system operations. There are no known exploits in the wild at this time.
Mitigation Recommendations
Microsoft has released an official fix for this vulnerability. It is recommended to apply the security update provided by Microsoft as soon as possible to remediate the issue. No additional mitigation steps are indicated by the vendor advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-02-11T18:33:57.776Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26170","vendor":"Microsoft"}]
Threat ID: 69de7a1882d89c981fd6a68c
Added to database: 4/14/2026, 5:32:08 PM
Last enriched: 4/14/2026, 7:16:51 PM
Last updated: 4/15/2026, 6:06:09 AM
Views: 5
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