CVE-2021-33753Network attack vector

User-interface spoofing after malicious link interaction

Published Jul 14, 2021 · Updated Aug 10, 2026

Spoofing in Microsoft Bing Search for Android allows remote attackers to alter displayed content after a user opens a malicious page or link. Microsoft has not published the affected code path or explained how the application mishandles the linked content to produce the spoofed interface. The attack requires no privileges but does require user interaction, and the documented consequence is limited to low-integrity user-interface content.

CVSS severity4.7
Medium
EPSS probability1.91%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Spoofing in Microsoft Bing Search for Android allows remote attackers to alter displayed content after a user opens a malicious page or link. Microsoft has not published the affected code path or explained how the application mishandles the linked content to produce the spoofed interface. The attack requires no privileges but does require user interaction, and the documented consequence is limited to low-integrity user-interface content.

The record

CVE
CVE-2021-33753
Published
Jul 14, 2021
Updated
Aug 10, 2026
Vendor
Microsoft
Product
Microsoft Bing Search for Android
Classifications
T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 14, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 10, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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  1. Affected versionversion=-

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Microsoft · Microsoft Bing Search for Androidversion=-

Published CVSS scores

4.7MicrosoftCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N
6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1204.001User Execution: Malicious Link

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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