Skip to content
OpenAdvisories
High MSRC-CVE-2026-83862 1 CVE

Windows Network Load Balancing Remote Code Execution Vulnerability

Published Oct 13, 2026 · Updated Oct 23, 2026 · Revision 2

Vendor: Microsoft

Summary

Impact: Remote Code Execution. Microsoft rating: Important. Not known to be exploited — Exploitation Less Likely. Customer action: Required.

Details

How could an attacker exploit this vulnerability?
An unauthenticated attacker could exploit this vulnerability by sending a specially crafted packet to an affected service over the network. Successful exploitation could allow the attacker to execute code on the target system. No authentication or user interaction is required.

Security updates
10.0.17763.9376 — https://support.microsoft.com/help/5126651
10.0.20348.5761 — https://support.microsoft.com/help/5126655
10.0.26100.33650 — https://support.microsoft.com/help/5126646
10.0.14393.9612 — https://support.microsoft.com/help/5126868
6.2.9200.26434 — https://support.microsoft.com/help/5126835
6.3.9600.23470 — https://support.microsoft.com/help/5126836

Vulnerabilities 1

Revision history

  1. #2

    Corrected the CVSS Attack Vector metric from Network (AV:N) to Adjacent (AV:A) to reflect the requirement for Layer 2 network adjacency. The CVSS base score has decreased from 9.8 to 8.8. This is an informational change only. Customers who have successfully installed the update do not need to take any further action.

  2. #1

    Information published.

References