---
id: "CVE-2026-96074"
page: "https://infrastack.ai/live/CVE-2026-96074"
kind: "vulnerability"
aliases: ["CVE-2026-96074"]
title: "Windows AppX Package Manager: heap overflow lets a local user gain higher privileges"
severity: "high"
cvss: 7.8
epss: null
exploited: false
status: "open"
category: "infrastructure"
products: []
ecosystems: []
tags: ["appx", "endpoints", "infrastructure", "local-privilege-escalation", "windows"]
not_affected_if: ["no-local-untrusted-users"]
published_at: "2026-11-10T19:22:05+00:00"
first_seen_at: "2026-11-10T19:25:29+00:00"
updated_at: "2026-11-10T19:54:46+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-96074", "first_seen_at": "2026-11-10T19:25:29+00:00"}, {"source": "analyst", "url": null, "first_seen_at": "2026-11-10T19:54:46+00:00"}]
exploit_sources: []
---

# Windows AppX Package Manager: heap overflow lets a local user gain higher privileges

Link for people: https://infrastack.ai/live/CVE-2026-96074 (this .md is for agents)

A heap-based buffer overflow in the Windows AppX Package Manager lets a user who already has local access elevate their privileges. The sources do not describe the exact trigger or the affected Windows builds.

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

## Timeline

- 2026-11-10T19:25:29+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-96074
- 2026-11-10T19:54:46+00:00 analyst — No primary source readable: MSRC page and CVRF returned empty, NVD page has no content. Affected builds, KB and fix unknown; the sibling CVE-2026-85934 (AppX use-after-free) is a different CVE and was not used. To settle: open the MSRC update guide entry for the CVE in a browser.

## From the sources

Heap-based buffer overflow in Windows AppX Package Manager 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_