---
id: "CVE-2026-96047"
page: "https://infrastack.ai/live/CVE-2026-96047"
kind: "vulnerability"
aliases: ["CVE-2026-96047"]
title: "Windows Installer: use-after-free lets local user gain higher privileges"
severity: "high"
cvss: 7.0
epss: null
exploited: false
status: "open"
category: "infrastructure"
products: [{"name": "Windows Installer", "fixed": [], "affected": "", "ecosystem": "vendor"}]
ecosystems: ["vendor"]
tags: ["infrastructure", "windows", "windows-installer"]
not_affected_if: ["no-local-untrusted-users"]
published_at: "2026-11-10T19:22:01+00:00"
first_seen_at: "2026-11-10T19:25:28+00:00"
updated_at: "2026-11-10T20:02:11+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-96047", "first_seen_at": "2026-11-10T19:25:28+00:00"}, {"source": "analyst", "url": null, "first_seen_at": "2026-11-10T20:02:11+00:00"}]
exploit_sources: []
---

# Windows Installer: use-after-free lets local user gain higher privileges

Link for people: https://infrastack.ai/live/CVE-2026-96047 (this .md is for agents)

A use-after-free bug in Windows Installer lets an authorized local user escalate their privileges on the machine. An attacker who already has a foothold on a Windows system could gain administrator-level control.

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

## Affected

- vendor:Windows Installer affected range not listed fixed no fixed version listed

## How to check

unknown: the Microsoft Security Update Guide entry for CVE-2026-96047 could not be read (JavaScript-only page). Check that entry for the affected builds and KB, then compare with the installed build (winver, or Get-HotFix).

## Timeline

- 2026-11-10T19:25:28+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-96047
- 2026-11-10T20:02:11+00:00 analyst — MSRC page and CVRF API returned nothing readable; search found only the unrelated Windows Installer CVE-2026-70347 (August). No primary source for this CVE, so no fix, versions or verified fields. CVSS 7.0 AV:L/AC:H/PR:L from Microsoft; no exploitation or PoC seen. Revisit once MSRC content is readable.

## From the sources

Use after free in Windows Installer allows an authorized attacker to elevate privileges locally.

---

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