---
id: "CVE-2026-96092"
page: "https://infrastack.ai/live/CVE-2026-96092"
kind: "vulnerability"
aliases: ["CVE-2026-96092"]
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: [{"name": "Windows Server 2025", "fixed": ["10.0.26100.33822"], "affected": ">= 10.0.26100.0, < 10.0.26100.33822", "ecosystem": "vendor"}]
ecosystems: []
tags: ["dns-server", "infrastructure", "windows", "windows-server-2025"]
not_affected_if: ["no-dns-role", "patched"]
published_at: "2026-11-10T19:22:07+00:00"
first_seen_at: "2026-11-10T19:25:30+00:00"
updated_at: "2026-11-10T19:48:19+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-96092", "first_seen_at": "2026-11-10T19:25:30+00:00"}, {"source": "analyst", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-96092", "first_seen_at": "2026-11-10T19:48:19+00:00", "cites": ["https://nvd.nist.gov/vuln/detail/CVE-2026-96092"]}]
exploit_sources: []
---

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

Link for people: https://infrastack.ai/live/CVE-2026-96092 (this .md is for agents)

Use-after-free in the Windows DNS Server service. Per NVD (Microsoft's data), an unauthenticated network attacker can execute code; attack complexity is high (CVSS 8.1). Listed as affecting Windows Server 2025 and Server Core below build 10.0.26100.33822. No exploitation or PoC reported yet.

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

## Affected

- vendor:Windows Server 2025 affected >= 10.0.26100.0, < 10.0.26100.33822 fixed 10.0.26100.33822

## How to check

On each Windows Server 2025 host run: (Get-WindowsFeature DNS).Installed to see whether the DNS Server role is installed, and [System.Environment]::OSVersion.Version or winver to read the build. Exposed if DNS is installed and build is below 10.0.26100.33822. Whether the role must be enabled is not stated in the source; assume yes.

## Fix

Install the November 2026 Windows Server 2025 cumulative update that brings the build to 10.0.26100.33822 or later (build from NVD/CNA data; KB number not confirmed, see MSRC advisory).

## Timeline

- 2026-11-10T19:25:30+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-96092
- 2026-11-10T19:48:19+00:00 analyst https://nvd.nist.gov/vuln/detail/CVE-2026-96092 — Read NVD record (Microsoft CNA data): only Windows Server 2025 incl. Server Core, 10.0.26100.0 to <10.0.26100.33822 listed. MSRC page is JS-only, CVFR feed too large; KB number, DNS-role requirement and exploitation status not confirmed from vendor text. Nothing verified. No X/search done; no check written (needs role/build, not repo-readable).

## Documents

- [describes] NVD CVE-2026-96092 (CNA data from Microsoft) https://nvd.nist.gov/vuln/detail/CVE-2026-96092

## From the sources

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

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_Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai_