CVE-2026-83862 Windows Network Load Balancing Remote Code Execution Vulnerability

Reported by Microsoft Security Response Center

Summary by Cyber Security News23 Oct 2026, 16:00 CET

About this summary. This is a short excerpt from the description that Microsoft Security Response Center published with its article. Cyber Security News did not report or verify the underlying story. Read the original: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83862

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.

Read the full article at Microsoft Security Response Center →

Source attribution: headline and facts are from Microsoft Security Response Center (msrc.microsoft.com). Summary method: excerpt of the source description. See our source attribution policy.

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