CVE-2026-42828: CWE-126: Buffer Over-read in Microsoft Windows 10 Version 1809
Buffer over-read in Windows Projected File System Filter Driver allows an authorized attacker to elevate privileges locally.
AI Analysis
Technical Summary
This vulnerability involves a buffer over-read condition in the Windows Projected File System Filter Driver on Windows 10 Version 1809 (build 10.0.17763.0). Exploitation requires local access with some privileges and does not require user interaction. Successful exploitation could lead to elevation of privileges, impacting confidentiality, integrity, and availability. Microsoft has published an official fix for this issue.
Potential Impact
An authorized local attacker can exploit this buffer over-read vulnerability to elevate their privileges on the affected system. The vulnerability impacts confidentiality, integrity, and availability with a CVSS v3.1 base score of 7.8 (high severity). 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 security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42828 to remediate this vulnerability.
CVE-2026-42828: CWE-126: Buffer Over-read in Microsoft Windows 10 Version 1809
Description
Buffer over-read in Windows Projected File System Filter Driver allows an authorized attacker to elevate privileges locally.
CVSS v3.1
Score 7.8high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves a buffer over-read condition in the Windows Projected File System Filter Driver on Windows 10 Version 1809 (build 10.0.17763.0). Exploitation requires local access with some privileges and does not require user interaction. Successful exploitation could lead to elevation of privileges, impacting confidentiality, integrity, and availability. Microsoft has published an official fix for this issue.
Potential Impact
An authorized local attacker can exploit this buffer over-read vulnerability to elevate their privileges on the affected system. The vulnerability impacts confidentiality, integrity, and availability with a CVSS v3.1 base score of 7.8 (high severity). 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 security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42828 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-04-30T14:51:12.703Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42828","vendor":"Microsoft"}]
Threat ID: 6a284cbb8dd33fbd85664545
Added to database: 06/09/2026, 17:26:19 UTC
Last enriched: 07/29/2026, 21:46:13 UTC
Last updated: 07/31/2026, 19:30:13 UTC
Views: 68
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