CVE-2026-69625: CWE-122: Heap-based Buffer Overflow in Microsoft Windows 10 Version 1809
Description
CVE-2026-69625 is a heap-based buffer overflow vulnerability in the Windows Connected User Experiences and Telemetry component of Microsoft Windows 10 Version 1809 and later updates. This flaw allows an authorized attacker to elevate privileges over a network. The vulnerability has a high severity score of 8.0 and affects multiple Windows 10 builds prior to specific patched versions. An official fix is available from Microsoft.
CVSS v3.1
Score 8.0high
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 (CVE-2026-69625) involves a heap-based buffer overflow in the Windows Connected User Experiences and Telemetry feature, which could be exploited by an authorized attacker remotely to elevate privileges. The flaw affects several Windows 10 versions starting from build 17763.0 up to but not including various patched builds (e.g., <10.0.17763.9245, <10.0.19044.7725, etc.). The CVSS 3.1 score is 8.0, indicating high impact on confidentiality, integrity, and availability. Microsoft has issued an official fix for this vulnerability.
Potential Impact
Successful exploitation allows an authorized attacker to elevate privileges remotely over a network, potentially gaining higher-level access to the affected system. The vulnerability impacts confidentiality, integrity, and availability with high severity.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security updates provided by Microsoft for the affected Windows 10 versions as listed in the vendor advisory. No additional mitigation steps are indicated beyond applying the official patch.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-08-03T21:21:00.595Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69625","vendor":"Microsoft"}]
Threat ID: 6aa04518acd9273b49fa9708
Added to database: 09/08/2026, 17:25:44 UTC
Last enriched: 10/16/2026, 21:25:44 UTC
Last updated: 10/23/2026, 15:10:14 UTC
Views: 24
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