CVE-2026-88219: CWE-822: Untrusted Pointer Dereference in Microsoft Windows 10 Version 1607
Description
CVE-2026-88219 is a high severity vulnerability in Microsoft Windows 10 Version 1607 involving untrusted pointer dereference in the RPC Runtime. This flaw allows an unauthorized attacker to execute code remotely over a network. The vulnerability affects multiple Windows 10 builds prior to specific patch versions. An official fix is available from Microsoft.
CVSS v3.1
Score 8.8high
Affected software
Microsoft
Windows 10 Version 1607
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 11 Version 26H2
Microsoft
Windows Server 2012
Microsoft
Windows Server 2012 (Server Core installation)
Microsoft
Windows Server 2012 R2
Microsoft
Windows Server 2012 R2 (Server Core installation)
Microsoft
Windows Server 2016
Microsoft
Windows Server 2016 (Server Core installation)
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
CVE-2026-88219 is a vulnerability classified under CWE-822 (Untrusted Pointer Dereference) affecting the RPC Runtime component in Microsoft Windows 10 Version 1607 and related builds. The flaw allows remote, unauthorized attackers to execute arbitrary code by exploiting improper handling of pointers. The vulnerability has a CVSS 3.1 base score of 8.8, indicating high severity with network attack vector, low attack complexity, no privileges required, and user interaction required. Microsoft has published an official fix addressing this issue.
Potential Impact
Successful exploitation of this vulnerability allows an attacker to execute arbitrary code remotely on affected Windows 10 systems, potentially leading to full system compromise with high confidentiality, integrity, and availability impact.
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 detailed in the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-88219. No additional mitigations are specified beyond applying the official patch.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-09-09T22:01:13.386Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-88219","vendor":"Microsoft"}]
Threat ID: 6ace856b2cdf04f656a003ac
Added to database: 10/13/2026, 19:24:27 UTC
Last enriched: 10/14/2026, 01:03:25 UTC
Last updated: 10/14/2026, 01:03:25 UTC
Views: 5
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