CVE-2022-4262Known exploitationPublic exploitNetwork attack vector

Renderer code execution via inconsistent V8 reparsing

Published Dec 2, 2022 · Updated Oct 21, 2025

Type confusion in V8 in Google Chrome before 108.0.5359.94 allows remote attackers to execute code through a crafted HTML page. V8's JavaScript parser handles direct eval with different strictness during initial parsing and reparsing, producing mismatched bytecode that reuses incompatible feedback vectors. A user must load attacker-controlled HTML and trigger bytecode aging; exploitation creates arbitrary read/write primitives and renderer code execution, while sandbox escape requires a separate flaw.

CVSS severity8.8
High
EPSS probability15.98%
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 108.0.5359.94 allows remote attackers to execute code through a crafted HTML page. V8's JavaScript parser handles direct eval with different strictness during initial parsing and reparsing, producing mismatched bytecode that reuses incompatible feedback vectors. A user must load attacker-controlled HTML and trigger bytecode aging; exploitation creates arbitrary read/write primitives and renderer code execution, while sandbox escape requires a separate flaw.

The record

CVE
CVE-2022-4262
Published
Dec 2, 2022
Updated
Oct 21, 2025
Vendor
Google Cloud
Product
Google Chrome
Classifications
CWE-843, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 2, 2022CVE 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=unspecified <108.0.5359.94

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Google Cloud · Google Chromeversion=unspecified <108.0.5359.94

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 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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