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) affects Microsoft Windows 10 Version 1607 (build 10.0.14393.0) and is caused by improper input validation in Microsoft PowerShell. An attacker with local authorized access can exploit this flaw to elevate their privileges, potentially gaining higher-level system access. The vulnerability is classified under CWE-20 (Improper Input Validation). Microsoft has published an official fix to remediate this issue.
Potential Impact
Successful exploitation allows an authorized local attacker to elevate privileges, potentially leading to full system compromise affecting confidentiality, integrity, and availability of the affected system. There are no known exploits in the wild at this time.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the provided patch promptly to remediate this vulnerability. Refer to the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26170 for patch details and installation instructions.
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.
CVSS v3.1
Score 7.8high
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-26170) affects Microsoft Windows 10 Version 1607 (build 10.0.14393.0) and is caused by improper input validation in Microsoft PowerShell. An attacker with local authorized access can exploit this flaw to elevate their privileges, potentially gaining higher-level system access. The vulnerability is classified under CWE-20 (Improper Input Validation). Microsoft has published an official fix to remediate this issue.
Potential Impact
Successful exploitation allows an authorized local attacker to elevate privileges, potentially leading to full system compromise affecting confidentiality, integrity, and availability of the affected system. There are no known exploits in the wild at this time.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the provided patch promptly to remediate this vulnerability. Refer to the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26170 for patch details and installation instructions.
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: 5/19/2026, 10:35:24 AM
Last updated: 5/30/2026, 2:42:06 PM
Views: 59
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