CVE-2026-100222

Microsoft Windows 10 1607: heap buffer overflow

Risk score: 86/100
CVSS: 9.8 v3.1
Exploit chance (30 days): 0.9%
Published: 13 Oct 2026

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What to know

What it is: Heap-based buffer overflow in Network Policy Server (NPS) allows an unauthorized attacker to execute code over a network.
Affected: Microsoft Windows 10 1607
Fix: Apply the vendor's security update; see the linked advisory.
Exploitation: No known exploitation

Why it is Red

CVSS 9.8 critical
Remotely exploitable without logging in
On your watchlist: windows server

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-100222

Original description

Heap-based buffer overflow in Network Policy Server (NPS) allows an unauthorized attacker to execute code over a network.

Last activity 13 Oct 2026. Patch Forecast updates every hour.