CVE-2026-33098: CWE-416: Use After Free in Microsoft Windows 10 Version 1607
Use after free in Windows Container Isolation FS Filter Driver allows an authorized attacker to elevate privileges locally.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-33098) involves a use-after-free condition in the Windows Container Isolation FS Filter Driver on Windows 10 Version 1607 (build 10.0.14393.0). An authorized attacker with local access can exploit this flaw to elevate their privileges, potentially gaining higher system rights. The vulnerability is classified under CWE-416 (Use After Free). 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. The vulnerability affects confidentiality, integrity, and availability with high impact ratings as per the CVSS vector. No known exploits are currently reported in the wild.
Mitigation Recommendations
An official fix from Microsoft is available and should be applied promptly to affected systems running Windows 10 Version 1607. Refer to the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-33098 for detailed patching instructions. No additional mitigation steps are indicated beyond applying the official update.
CVE-2026-33098: CWE-416: Use After Free in Microsoft Windows 10 Version 1607
Description
Use after free in Windows Container Isolation FS Filter Driver 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-2026-33098) involves a use-after-free condition in the Windows Container Isolation FS Filter Driver on Windows 10 Version 1607 (build 10.0.14393.0). An authorized attacker with local access can exploit this flaw to elevate their privileges, potentially gaining higher system rights. The vulnerability is classified under CWE-416 (Use After Free). 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. The vulnerability affects confidentiality, integrity, and availability with high impact ratings as per the CVSS vector. No known exploits are currently reported in the wild.
Mitigation Recommendations
An official fix from Microsoft is available and should be applied promptly to affected systems running Windows 10 Version 1607. Refer to the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-33098 for detailed patching instructions. No additional mitigation steps are indicated beyond applying the official update.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-03-17T20:15:23.718Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-33098","vendor":"Microsoft"}]
Threat ID: 69de7a3882d89c981fd6ceff
Added to database: 4/14/2026, 5:32:40 PM
Last enriched: 5/19/2026, 10:50:28 AM
Last updated: 5/29/2026, 7:08:19 PM
Views: 63
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