CVE-2026-42907: CWE-200: Exposure of Sensitive Information to an Unauthorized Actor in Microsoft Windows 10 Version 1809
Exposure of sensitive information to an unauthorized actor in Windows Shell allows an authorized attacker to disclose information over a network.
AI Analysis
Technical Summary
This vulnerability, identified as CVE-2026-42907, involves the exposure of sensitive information (CWE-200) in Windows Shell on Windows 10 Version 1809 (build 10.0.17763.0). An attacker with limited privileges (PR:L) can remotely exploit this flaw over a network (AV:N) without requiring user interaction (UI:N). The vulnerability impacts confidentiality (C:H) but does not affect integrity or availability. Microsoft has released an official fix to remediate this issue.
Potential Impact
An attacker with authorized limited privileges can disclose sensitive information remotely over the network, potentially leading to information leakage. The vulnerability does not impact system integrity or availability. No known exploits are reported 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-2026-42907 to remediate this vulnerability.
CVE-2026-42907: CWE-200: Exposure of Sensitive Information to an Unauthorized Actor in Microsoft Windows 10 Version 1809
Description
Exposure of sensitive information to an unauthorized actor in Windows Shell allows an authorized attacker to disclose information over a network.
CVSS v3.1
Score 6.5medium
Affected software
Microsoft
Windows 10 Version 1809
Microsoft
Windows 10 Version 21H2
Microsoft
Windows 10 Version 22H2
Microsoft
Windows 11 version 23H2
Microsoft
Windows 11 Version 23H2
Microsoft
Windows 11 Version 24H2
Microsoft
Windows 11 Version 25H2
Microsoft
Windows 11 version 26H1
Microsoft
Windows Server 2019
Microsoft
Windows Server 2019 (Server Core installation)
Microsoft
Windows Server 2022
Microsoft
Windows Server 2025
Microsoft
Windows Server 2025 (Server Core installation)
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability, identified as CVE-2026-42907, involves the exposure of sensitive information (CWE-200) in Windows Shell on Windows 10 Version 1809 (build 10.0.17763.0). An attacker with limited privileges (PR:L) can remotely exploit this flaw over a network (AV:N) without requiring user interaction (UI:N). The vulnerability impacts confidentiality (C:H) but does not affect integrity or availability. Microsoft has released an official fix to remediate this issue.
Potential Impact
An attacker with authorized limited privileges can disclose sensitive information remotely over the network, potentially leading to information leakage. The vulnerability does not impact system integrity or availability. No known exploits are reported 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-2026-42907 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-04-30T22:35:54.968Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42907","vendor":"Microsoft"}]
Threat ID: 6a284cc08dd33fbd856646e8
Added to database: 06/09/2026, 17:26:24 UTC
Last enriched: 08/14/2026, 13:19:07 UTC
Last updated: 09/11/2026, 22:06:33 UTC
Views: 84
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