CVE-2020-6418Known exploitationPublic exploitNetwork attack vector

Code execution via TurboFan side-effect mis-modeling

Published Feb 27, 2020 · Updated Oct 21, 2025

Type confusion in V8 in Google Chrome before 80.0.3987.122 allows remote attackers to execute code via a crafted HTML page. TurboFan's NodeProperties::InferReceiverMapsUnsafe walks past a side-effectful JSCreate node without marking inferred object maps unreliable, enabling confusion between double and tagged-pointer arrays. Viewing attacker-controlled HTML is required; the primitive executes code in the renderer, while full host compromise requires a separate sandbox escape.

CVSS severity8.8
High
EPSS probability78.81%
Next 30 days · Sep 16, 2026
Known exploitationReported
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Type confusion in V8 in Google Chrome before 80.0.3987.122 allows remote attackers to execute code via a crafted HTML page. TurboFan's NodeProperties::InferReceiverMapsUnsafe walks past a side-effectful JSCreate node without marking inferred object maps unreliable, enabling confusion between double and tagged-pointer arrays. Viewing attacker-controlled HTML is required; the primitive executes code in the renderer, while full host compromise requires a separate sandbox escape.

The record

CVE
CVE-2020-6418
Published
Feb 27, 2020
Updated
Oct 21, 2025
Vendor
Google Cloud
Product
Google Chrome
Classifications
CWE-843, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 24, 2020Exploitation reportedExploit reported in the wild by Google
  2. Feb 27, 2020CVE publishedPublication date reported by the CVE source.
  3. Oct 21, 2025Record 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 <80.0.3987.122

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Google Cloud · Google Chromeversion=unspecified <80.0.3987.122

Published CVSS scores

8.8CISACVSS: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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationReported
Public exploitPublished

Weakness, pattern, technique

CWE-843Access of Resource Using Incompatible Type ('Type Confusion')
T1203Exploitation for Client Execution

Public exploit references

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

Reported exploitation

Technologies

Your stack

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Your stack

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