---
id: "CVE-2026-96177"
page: "https://infrastack.ai/live/CVE-2026-96177"
kind: "vulnerability"
aliases: ["CVE-2026-96177"]
title: "Windows DNS Server: use-after-free lets an unauthenticated attacker run code"
severity: "high"
cvss: 8.1
epss: null
exploited: false
status: "open"
category: "infrastructure"
products: []
ecosystems: []
tags: ["dns-server", "infrastructure", "windows", "windows-server"]
not_affected_if: ["no-dns-server-role"]
published_at: "2026-11-10T19:22:17+00:00"
first_seen_at: "2026-11-10T19:25:32+00:00"
updated_at: "2026-11-10T19:39:48+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-96177", "first_seen_at": "2026-11-10T19:25:32+00:00"}, {"source": "analyst", "url": null, "first_seen_at": "2026-11-10T19:39:48+00:00"}]
exploit_sources: []
---

# Windows DNS Server: use-after-free lets an unauthenticated attacker run code

Link for people: https://infrastack.ai/live/CVE-2026-96177 (this .md is for agents)

A use-after-free bug in the Microsoft DNS Server component lets an unauthorized attacker run code over the network. The sources give a CVSS score of 8.1 but name no affected versions or fix.

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

## How to check

Unknown until MSRC lists affected builds. Only systems with the Windows DNS Server role installed are relevant (Get-WindowsFeature DNS). Compare the build against the November 2026 cumulative update in the MSRC entry for CVE-2026-96177.

## Timeline

- 2026-11-10T19:25:32+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-96177
- 2026-11-10T19:39:48+00:00 analyst — Could not read MSRC page (JS-only, empty) and NVD page has no content; no primary source for affected builds or KB. Search hits are sibling DNS CVEs (69730, 77505, 72987), not this one, so none copied. Nothing verified. Revisit when MSRC/NVD populate: need per-release fixed builds from November 2026 Patch Tuesday.

## From the sources

Use after free in DNS Server allows an unauthorized attacker to execute code over a network.

---

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