---
id: CVE-2026-97774
title: >-
  Time-of-check time-of-use (toctou) race condition in Microsoft Office
  Click-To-Run allows an authorized attacker to elevate privileges locally.
summary: >-
  Time-of-check time-of-use (toctou) race condition in Microsoft Office
  Click-To-Run allows an authorized attacker to elevate privileges locally.
severity: high
cvss: 7
cvssVector: 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-367
vendor: microsoft
product: 365_apps
affected:
  - 365_apps
published: '2026-10-13'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T17:39:14.387'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-97774'
references:
  - url: 'https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-97774'
    label: secure@microsoft.com
tags:
  - nvd
  - cve.org
epss: 0.00181
epssPercentile: 0.07632
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-10-13T19:32:41.138419Z'
ingestedAt: '2026-10-13T19:43:29.302Z'
---

## Overview

Time-of-check time-of-use (toctou) race condition in Microsoft Office Click-To-Run allows an authorized attacker to elevate privileges locally.

## Affected

- `365_apps`

## Remediation

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