CVE-2023-2033Known exploitationPublic exploitNetwork attack vector

Heap corruption via V8 type confusion

Published Apr 14, 2023 · Updated Oct 21, 2025

Type confusion in Google Chrome before 112.0.5615.121 allows remote attackers to corrupt V8 heap memory through a crafted HTML page. V8's TurboFan optimizer assigns the internal hole sentinel an incompatible type, letting crafted JavaScript create arbitrary memory-read and memory-write primitives. A user must open attacker-controlled HTML; exploitation affects browser confidentiality, integrity, and availability, and Google observed exploitation in the wild.

CVSS severity8.8
High
EPSS probability40.80%
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 Google Chrome before 112.0.5615.121 allows remote attackers to corrupt V8 heap memory through a crafted HTML page. V8's TurboFan optimizer assigns the internal hole sentinel an incompatible type, letting crafted JavaScript create arbitrary memory-read and memory-write primitives. A user must open attacker-controlled HTML; exploitation affects browser confidentiality, integrity, and availability, and Google observed exploitation in the wild.

The record

CVE
CVE-2023-2033
Published
Apr 14, 2023
Updated
Oct 21, 2025
Vendor
Google Cloud
Product
Google Chrome
Classifications
CWE-843, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 14, 2023CVE publishedPublication date reported by the CVE source.
  2. 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=112.0.5615.121 <112.0.5615.121

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Google Cloud · Google Chromeversion=112.0.5615.121 <112.0.5615.121

Published CVSS scores

8.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
8.8NIST National Vulnerability DatabaseCVSS: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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