CVE-2020-6487Network attack vector

Navigation restriction bypass via crafted HTML downloads

Published May 21, 2020 · Updated Aug 4, 2024

Insufficient policy enforcement in Chrome downloads before 83.0.4103.61 allows remote attackers to bypass navigation restrictions via crafted HTML. Google's public advisory identifies the downloads component but does not disclose the code locus or incorrect policy decision applied to the page's download navigation. Exploitation requires user interaction with attacker-controlled content, and the bounded impact is unauthorized navigation rather than data disclosure or code execution.

CVSS severity6.5
Medium
EPSS probability1.60%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Insufficient policy enforcement in Chrome downloads before 83.0.4103.61 allows remote attackers to bypass navigation restrictions via crafted HTML. Google's public advisory identifies the downloads component but does not disclose the code locus or incorrect policy decision applied to the page's download navigation. Exploitation requires user interaction with attacker-controlled content, and the bounded impact is unauthorized navigation rather than data disclosure or code execution.

The record

CVE
CVE-2020-6487
Published
May 21, 2020
Updated
Aug 4, 2024
Vendor
Google Cloud
Product
Google Chrome
Classifications
CWE-276, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 21, 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 <83.0.4103.61

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Google Cloud · Google Chromeversion=unspecified <83.0.4103.61

Published CVSS scores

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

CWE-276Incorrect Default Permissions
T1189Drive-by Compromise

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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