---
id: CVE-2026-85340
title: >-
  Use after free in Microsoft Office Click-To-Run allows an authorized attacker
  to elevate privileges locally.
summary: >-
  Use after free in Microsoft Office Click-To-Run allows an authorized attacker
  to elevate privileges locally.
severity: high
cvss: 7.8
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-416
vendor: microsoft
product: 365_apps
affected:
  - 365_apps
  - office_2021
  - office_2024
published: '2026-10-13'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T17:31:29.947'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-85340'
references:
  - url: 'https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-85340'
    label: secure@microsoft.com
tags:
  - nvd
  - cve.org
epss: 0.00364
epssPercentile: 0.30088
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-10-13T20:14:16.762362Z'
ingestedAt: '2026-10-13T19:43:29.156Z'
---

## Overview

Use after free in Microsoft Office Click-To-Run allows an authorized attacker to elevate privileges locally.

## Affected

- `365_apps`
- `office_2021`
- `office_2024`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.