---
id: "CVE-2026-96066"
page: "https://infrastack.ai/live/CVE-2026-96066"
kind: "vulnerability"
aliases: ["CVE-2026-96066"]
title: "Windows LSASS: stack buffer overflow lets a local user gain higher privileges"
severity: "high"
cvss: 7.8
epss: null
exploited: false
status: "open"
category: "infrastructure"
products: []
ecosystems: []
tags: ["endpoints", "infrastructure", "local-privilege-escalation", "lsass", "windows"]
not_affected_if: ["no-local-access", "no-local-accounts"]
published_at: "2026-11-10T19:22:04+00:00"
first_seen_at: "2026-11-10T19:25:29+00:00"
updated_at: "2026-11-10T19:56:56+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-96066", "first_seen_at": "2026-11-10T19:25:29+00:00"}, {"source": "analyst", "url": null, "first_seen_at": "2026-11-10T19:56:56+00:00"}]
exploit_sources: []
---

# Windows LSASS: stack buffer overflow lets a local user gain higher privileges

Link for people: https://infrastack.ai/live/CVE-2026-96066 (this .md is for agents)

A stack-based buffer overflow in the Windows Local Security Authority Subsystem Service (LSASS) lets an authorized local attacker elevate their privileges. The NVD record rates it high, with a CVSS score of 7.8.

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

## How to check

unknown: affected Windows builds not yet read from Microsoft. Look up CVE-2026-96066 in the MSRC Security Update Guide for your build and compare with the installed KB (winver, Get-HotFix).

## Timeline

- 2026-11-10T19:25:29+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-96066
- 2026-11-10T19:56:56+00:00 analyst — Could not read primary source: MSRC page is JS-only (web-cli returned a loading shell), NVD page returned empty, browser-cli is out of quota. No affected builds, KB or fixed versions found; nothing verified. Settle by opening the MSRC Security Update Guide entry for CVE-2026-96066 (November 2026 Patch Tuesday, per BleepingComputer, may include it, but not confirmed). No exploitation or PoC evidence found.

## From the sources

Stack-based buffer overflow in Windows Local Security Authority Subsystem Service (LSASS) allows an authorized attacker to elevate privileges locally.

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