CVE-2026-83862

Microsoft Windows 10 1607: use-after-free

Risk score: 73/100
CVSS: 8.8 v3.1
Exploit chance (30 days): 0.3%
Published: 13 Oct 2026

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What to know

What it is: A use after free vulnerability in Windows Network Load Balancing allows an unauthorized attacker to execute code over an adjacent network, potentially leading to code execution, information disclosure, and denial of service.
Affected: {'products': ['Windows 10 1607'], 'vendor': ['Microsoft']}
Fix: Check the linked advisory for a fix, as none is specified in this record.
Exploitation: No known exploitation

Why it is Amber

CVSS 8.8 high
On your watchlist: windows server
Named in a government or vendor bulletin

Government and vendor bulletins

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

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83862

Original description

Use after free in Windows Network Load Balancing allows an unauthorized attacker to execute code over an adjacent network.

Last activity 23 Oct 2026. Patch Forecast updates every hour.