---
id: CVE-2021-42292
title: Microsoft Excel Security Feature Bypass Vulnerability
summary: Microsoft Excel Security Feature Bypass Vulnerability
severity: high
cvss: 7.8
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'
vendor: microsoft
product: 365_apps
affected:
  - 365_apps
  - excel = 2013
  - excel = 2016
  - office = 2013
  - office = 2019
  - office_2016
  - office_2019
  - office_2021
published: '2021-11-10'
updated: '2026-08-19'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2021-42292'
references:
  - url: 'https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-42292'
    label: secure@microsoft.com
  - url: >-
      https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-42292
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: >-
      https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-42292
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
  - kev
  - in-the-wild
  - exploit-available
epss: 0.43005
epssPercentile: 0.98674
kev: true
kevDateAdded: '2021-11-17'
kevDueDate: '2021-12-01'
kevRansomware: false
exploited: true
ingestedAt: '2026-08-20T17:59:03.340Z'
exploits:
  github: 1
  githubRepos:
    - 'https://github.com/corelight/CVE-2021-42292'
  checkedAt: '2026-09-25T08:20:39.887Z'
exploitAvailable: true
---

## Overview

Microsoft Excel Security Feature Bypass Vulnerability

## Affected

- `365_apps`
- `excel = 2013`
- `excel = 2016`
- `office = 2013`
- `office = 2019`
- `office_2016`
- `office_2019`
- `office_2021`

## Remediation

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