---
id: "CVE-2026-112804"
page: "https://infrastack.ai/live/CVE-2026-112804"
kind: "vulnerability"
aliases: ["CVE-2026-112804"]
title: "Windows exFAT driver heap overflow lets a local user gain higher privileges"
severity: "high"
cvss: 7.0
epss: null
exploited: false
status: "open"
category: "infrastructure"
products: []
ecosystems: []
tags: ["exfat", "infrastructure", "local", "privilege-escalation", "windows"]
not_affected_if: []
published_at: "2026-11-10T19:18:43+00:00"
first_seen_at: "2026-11-10T19:24:34+00:00"
updated_at: "2026-11-11T00:04:56+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-112804", "first_seen_at": "2026-11-10T19:24:34+00:00"}, {"source": "analyst", "url": null, "first_seen_at": "2026-11-11T00:04:56+00:00"}]
exploit_sources: []
---

# Windows exFAT driver heap overflow lets a local user gain higher privileges

Link for people: https://infrastack.ai/live/CVE-2026-112804 (this .md is for agents)

A heap-based buffer overflow in the Windows exFAT file system driver lets an attacker who already has an account on the machine raise their privileges. The sources do not describe a remote trigger.

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

## How to check

- Confirm the Windows build with `winver` and compare it against the Microsoft security update guide entry for CVE-2026-112804

## Timeline

- 2026-11-10T19:24:34+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-112804
- 2026-11-11T00:04:56+00:00 analyst — Could not read the MSRC entry (JS-only page, web-cli returned empty) or the NVD page; no primary source linked, nothing verified. Affected builds and KB still unknown; search found no other coverage of this CVE id.

## From the sources

Heap-based buffer overflow in Windows exFAT File System 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_