CVE-2020-6453Network attack vector

Heap corruption via crafted HTML

Published Jun 3, 2020 · Updated Aug 4, 2024

Memory corruption in V8 in Google Chrome before 80.0.3987.162 allows remote attackers to corrupt the heap through crafted HTML. The public record identifies an inappropriate V8 implementation, but the access-restricted Chromium issue leaves the faulty operation undisclosed. The attack requires user interaction to load attacker-controlled HTML; Google has not published the post-corruption capability or sandbox boundary.

CVSS severity8.8
High
EPSS probability0.88%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory corruption in V8 in Google Chrome before 80.0.3987.162 allows remote attackers to corrupt the heap through crafted HTML. The public record identifies an inappropriate V8 implementation, but the access-restricted Chromium issue leaves the faulty operation undisclosed. The attack requires user interaction to load attacker-controlled HTML; Google has not published the post-corruption capability or sandbox boundary.

The record

CVE
CVE-2020-6453
Published
Jun 3, 2020
Updated
Aug 4, 2024
Vendor
Google Cloud
Product
Google Chrome
Classifications
CWE-787, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 3, 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

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=unspecified <80.0.3987.162

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Google Cloud · Google Chromeversion=unspecified <80.0.3987.162

Published CVSS scores

6.8NIST NVDAV:N/AC:M/Au:N/C:P/I:P/A:P
8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-787Out-of-bounds Write
T1203Exploitation for Client Execution

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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