CVE-2024-5837Network attack vector

Out-of-bounds memory access via JSPI type confusion

Published Jun 11, 2024 · Updated Feb 13, 2025

Type confusion in V8's JSPI feature in Google Chrome before 126.0.6478.54 allows remote attackers to access memory out of bounds via crafted HTML. The JSPI implementation treats a V8 resource as an incompatible type while processing attacker-controlled page content, producing out-of-bounds access. A user must open the crafted page; published evidence establishes access outside intended memory bounds but does not specify read, write, crash, or code-execution outcomes.

CVSS severity8.8
High
EPSS probability0.53%
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 V8's JSPI feature in Google Chrome before 126.0.6478.54 allows remote attackers to access memory out of bounds via crafted HTML. The JSPI implementation treats a V8 resource as an incompatible type while processing attacker-controlled page content, producing out-of-bounds access. A user must open the crafted page; published evidence establishes access outside intended memory bounds but does not specify read, write, crash, or code-execution outcomes.

The record

CVE
CVE-2024-5837
Published
Jun 11, 2024
Updated
Feb 13, 2025
Vendor
Google Cloud
Product
Google Chrome
Classifications
CWE-843, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 11, 2024CVE 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=0 <126.0.6478.54
  2. Affected versionversion=126.0.6478.54 <126.0.6478.54

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Google Cloud · Google Chromeversion=0 <126.0.6478.54; version=126.0.6478.54 <126.0.6478.54

Published CVSS scores

8.8CISA-ADPCVSS: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 exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-843Access of Resource Using Incompatible Type ('Type Confusion')
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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