---
id: "CVE-2026-88212"
page: "https://infrastack.ai/live/CVE-2026-88212"
kind: "vulnerability"
aliases: ["CVE-2026-88212"]
title: "Windows NAT: use-after-free lets an adjacent-network attacker run code"
severity: "high"
cvss: 7.5
epss: null
exploited: false
status: "open"
category: "infrastructure"
products: [{"name": "Windows Network Address Translation (NAT)", "fixed": [], "affected": "", "ecosystem": "vendor"}]
ecosystems: ["vendor"]
tags: ["infrastructure", "network-address-translation", "windows"]
not_affected_if: []
published_at: "2026-11-10T19:21:27+00:00"
first_seen_at: "2026-11-10T19:25:19+00:00"
updated_at: "2026-11-10T21:05:02+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-88212", "first_seen_at": "2026-11-10T19:25:19+00:00"}, {"source": "analyst", "url": null, "first_seen_at": "2026-11-10T21:05:02+00:00"}]
exploit_sources: []
---

# Windows NAT: use-after-free lets an adjacent-network attacker run code

Link for people: https://infrastack.ai/live/CVE-2026-88212 (this .md is for agents)

A use-after-free flaw in the Windows Network Address Translation component lets an unauthorized attacker on the same network segment run code. NVD rates it high with a CVSS score of 7.5.

_Summary, check and fix written by a model from the sources; labelled as such._

## Affected

- vendor:Windows Network Address Translation (NAT) affected range not listed fixed no fixed version listed

## Timeline

- 2026-11-10T19:25:19+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-88212
- 2026-11-10T21:05:02+00:00 analyst — MSRC advisory page is JS-only and web-cli returned nothing; browser-cli 402 (credits), web-cli search found no page naming this CVE (VulDB lists it only as pending), NVD fetch returned an empty shell. No affected builds, KB number, or NAT-enabled precondition could be confirmed, so nothing is verified and no check was written. Settle with the MSRC page or the November 2026 Patch Tuesday CVRF entry for this CVE. X not queried (no need without a primary source).

## From the sources

Use after free in Windows Network Address Translation (NAT) allows an unauthorized attacker to execute code over an adjacent network.

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