---
id: "CVE-2026-119890"
page: "https://infrastack.ai/live/CVE-2026-119890"
kind: "vulnerability"
aliases: ["CVE-2026-119890"]
title: "Windows DHCP Server: out-of-bounds read lets an authorized user crash service"
severity: "medium"
cvss: 5.3
epss: null
exploited: false
status: "open"
category: "infrastructure"
products: [{"name": "Windows DHCP Server", "fixed": [], "affected": "", "ecosystem": "vendor"}]
ecosystems: ["vendor"]
tags: ["dhcp", "infrastructure", "windows", "windows-server"]
not_affected_if: ["no-windows-dhcp-role", "unauthenticated-network-blocked"]
published_at: "2026-11-10T19:20:09+00:00"
first_seen_at: "2026-11-10T19:25:01+00:00"
updated_at: "2026-11-10T20:02:29+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-119890", "first_seen_at": "2026-11-10T19:25:01+00:00"}]
exploit_sources: []
---

# Windows DHCP Server: out-of-bounds read lets an authorized user crash service

Link for people: https://infrastack.ai/live/CVE-2026-119890 (this .md is for agents)

Windows DHCP Server reads memory outside a buffer when handling certain requests. An authorized attacker on the network can use this to deny service to the DHCP server.

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

## Affected

- vendor:Windows DHCP Server affected range not listed fixed no fixed version listed

## How to check

- Check whether the Windows Server host runs the DHCP Server role, for example with `Get-WindowsFeature DHCP` in PowerShell
- Confirm the Windows build level against Microsoft's security update guide for this CVE; the sources do not list affected builds

## Timeline

- 2026-11-10T19:25:01+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-119890

## From the sources

Out-of-bounds read in Windows DHCP Server allows an authorized attacker to deny service over a network.

---

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