CVE-2023-4069Public exploitNetwork attack vector

Renderer code execution via mismatched constructor map

Published Aug 3, 2023 · Updated Feb 13, 2025

Type confusion in Google Chrome's V8 engine before 115.0.5790.170 allows remote attackers to execute code via crafted HTML. Maglev's VisitFindNonDefaultConstructorOrConstruct uses new_target's initial_map without verifying that its constructor matches the target, creating an object whose layout conflicts with its map. A victim must visit a malicious page; execution remains confined to the renderer sandbox unless a separate sandbox escape is chained.

CVSS severity8.8
High
EPSS probability24.92%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Type confusion in Google Chrome's V8 engine before 115.0.5790.170 allows remote attackers to execute code via crafted HTML. Maglev's VisitFindNonDefaultConstructorOrConstruct uses new_target's initial_map without verifying that its constructor matches the target, creating an object whose layout conflicts with its map. A victim must visit a malicious page; execution remains confined to the renderer sandbox unless a separate sandbox escape is chained.

The record

CVE
CVE-2023-4069
Published
Aug 3, 2023
Updated
Feb 13, 2025
Vendor
Google Cloud
Product
Google Chrome
Classifications
CWE-843, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 3, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 13, 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=115.0.5790.170 <115.0.5790.170

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Google Cloud · Google Chromeversion=115.0.5790.170 <115.0.5790.170

Published CVSS scores

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 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.

Technologies

Your stack

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Your stack

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