---
id: "CVE-2026-96077"
page: "https://infrastack.ai/live/CVE-2026-96077"
kind: "vulnerability"
aliases: ["CVE-2026-96077"]
title: "Windows TCP/IP: null pointer flaw lets a network attacker crash systems"
severity: "high"
cvss: 7.5
epss: null
exploited: false
status: "open"
category: "infrastructure"
products: [{"name": "Windows 10 / Server 2016 (1607)", "fixed": ["10.0.14393.9688"], "affected": "< 10.0.14393.9688", "ecosystem": "vendor"}, {"name": "Windows 10 1809 / Server 2019", "fixed": ["10.0.17763.9487"], "affected": "< 10.0.17763.9487", "ecosystem": "vendor"}, {"name": "Windows 10 21H2", "fixed": ["10.0.19044.7846"], "affected": "< 10.0.19044.7846", "ecosystem": "vendor"}, {"name": "Windows 10 22H2", "fixed": ["10.0.19045.7846"], "affected": "< 10.0.19045.7846", "ecosystem": "vendor"}, {"name": "Windows 11 23H2", "fixed": ["10.0.22631.7711"], "affected": "< 10.0.22631.7711", "ecosystem": "vendor"}, {"name": "Windows 11 24H2", "fixed": ["10.0.26100.9974"], "affected": "< 10.0.26100.9974", "ecosystem": "vendor"}, {"name": "Windows 11 25H2", "fixed": ["10.0.26200.9974"], "affected": "< 10.0.26200.9974", "ecosystem": "vendor"}, {"name": "Windows 11 26H1", "fixed": ["10.0.28000.3501"], "affected": "< 10.0.28000.3501", "ecosystem": "vendor"}, {"name": "Windows 11 26H2", "fixed": ["10.0.26300.9974"], "affected": "< 10.0.26300.9974", "ecosystem": "vendor"}, {"name": "Windows Server 2022", "fixed": ["10.0.20348.5870"], "affected": "< 10.0.20348.5870", "ecosystem": "vendor"}, {"name": "Windows Server 2025", "fixed": ["10.0.26100.33822"], "affected": "< 10.0.26100.33822", "ecosystem": "vendor"}]
ecosystems: ["vendor"]
tags: ["denial-of-service", "infrastructure", "network", "servers", "tcp-ip", "title-review", "windows"]
not_affected_if: []
published_at: "2026-11-10T19:22:06+00:00"
first_seen_at: "2026-11-10T19:25:29+00:00"
updated_at: "2026-11-10T19:54:04+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-96077", "first_seen_at": "2026-11-10T19:25:29+00:00"}, {"source": "analyst", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-96077", "first_seen_at": "2026-11-10T19:54:04+00:00", "cites": ["https://nvd.nist.gov/vuln/detail/CVE-2026-96077"]}]
exploit_sources: []
---

# Windows TCP/IP: null pointer flaw lets a network attacker crash systems

Link for people: https://infrastack.ai/live/CVE-2026-96077 (this .md is for agents)

A null pointer dereference in the Windows TCP/IP networking stack can be triggered by an unauthorized attacker over the network. The result is a denial of service, meaning affected machines can be made to crash or stop responding.

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

## Affected

- vendor:Windows 10 / Server 2016 (1607) affected < 10.0.14393.9688 fixed 10.0.14393.9688
- vendor:Windows 10 1809 / Server 2019 affected < 10.0.17763.9487 fixed 10.0.17763.9487
- vendor:Windows 10 21H2 affected < 10.0.19044.7846 fixed 10.0.19044.7846
- vendor:Windows 10 22H2 affected < 10.0.19045.7846 fixed 10.0.19045.7846
- vendor:Windows 11 23H2 affected < 10.0.22631.7711 fixed 10.0.22631.7711
- vendor:Windows 11 24H2 affected < 10.0.26100.9974 fixed 10.0.26100.9974
- vendor:Windows 11 25H2 affected < 10.0.26200.9974 fixed 10.0.26200.9974
- vendor:Windows 11 26H1 affected < 10.0.28000.3501 fixed 10.0.28000.3501
- vendor:Windows 11 26H2 affected < 10.0.26300.9974 fixed 10.0.26300.9974
- vendor:Windows Server 2022 affected < 10.0.20348.5870 fixed 10.0.20348.5870
- vendor:Windows Server 2025 affected < 10.0.26100.33822 fixed 10.0.26100.33822

## How to check

Run winver or (Get-ComputerInfo).OsBuildRevision and compare to the fixed builds: Win10 1607/Server 2016 10.0.14393.9688; 1809/Server 2019 17763.9487; Win10 21H2/22H2 19044/19045.7846; Win11 23H2 22631.7711; Win11 24H2/25H2/26H2 build 9974 (26100/26200/26300); 26H1 28000.3501; Server 2022 20348.5870; Server 2025 26100.33822. Any lower build is exposed. Confirm the KB number on Microsoft's update guide.

## Fix

Install the November 2026 Windows cumulative update bringing the build to at least the fixed build for your version. KB number not confirmed.

## Timeline

- 2026-11-10T19:25:29+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-96077
- 2026-11-10T19:54:04+00:00 analyst https://nvd.nist.gov/vuln/detail/CVE-2026-96077 — MSRC page is JS-only and unreadable here; builds taken from NVD's Microsoft-CNA affected list, so nothing marked verified. No exploitation/PoC found; X and social search not run.

## Documents

- [describes] NVD CVE-2026-96077 (Microsoft CNA data) https://nvd.nist.gov/vuln/detail/CVE-2026-96077

## From the sources

Null pointer dereference in Windows TCP/IP allows an unauthorized attacker to deny service over a network.

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