CVE-2020-6437Network attack vector

Security UI spoofing via undisclosed WebView logic

Published Apr 13, 2020 · Updated Aug 4, 2024

Security UI spoofing in WebView in Google Chrome before 81.0.4044.92 allows remote attackers to spoof trusted browser UI via a crafted application. Google's public release notice and CVE record do not disclose which WebView code path mishandles application-controlled content or how the false security indicator is produced. Exploitation requires a user to run or interact with a crafted application; the documented consequence is UI deception, not code execution or data disclosure.

CVSS severity4.3
Medium
EPSS probability1.76%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Security UI spoofing in WebView in Google Chrome before 81.0.4044.92 allows remote attackers to spoof trusted browser UI via a crafted application. Google's public release notice and CVE record do not disclose which WebView code path mishandles application-controlled content or how the false security indicator is produced. Exploitation requires a user to run or interact with a crafted application; the documented consequence is UI deception, not code execution or data disclosure.

The record

CVE
CVE-2020-6437
Published
Apr 13, 2020
Updated
Aug 4, 2024
Vendor
Google Cloud
Product
Google Chrome
Classifications
Unavailable
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 13, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=unspecified <81.0.4044.92

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Google Cloud · Google Chromeversion=unspecified <81.0.4044.92

Published CVSS scores

4.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
4.3NIST NVDAV:N/AC:M/Au:N/C:N/I:P/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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

No sourced classifications are available.

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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