---
id: CVE-2021-33753
title: Microsoft Bing Search Spoofing Vulnerability
summary: Microsoft Bing Search Spoofing Vulnerability
severity: medium
cvss: 4.7
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N'
vendor: microsoft
product: bing
affected:
  - bing
published: '2021-07-14'
updated: '2026-08-10'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2021-33753'
references:
  - url: 'https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-33753'
    label: secure@microsoft.com
  - url: >-
      https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-33753
    label: af854a3a-2127-422b-91ae-364da2661108
tags:
  - nvd
epss: 0.01914
epssPercentile: 0.7893
ingestedAt: '2026-08-10T16:41:15.054Z'
---

## Overview

Microsoft Bing Search Spoofing Vulnerability

## Affected

- `bing`

## Remediation

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