CVE-2024-7024Public exploitNetwork attack vector

Sandbox escape via uncleared i32 register high word

Published Sep 23, 2024 · Updated Sep 25, 2024

Inappropriate implementation in V8 in Google Chrome before 126.0.6478.54 allows remote attackers to escape the sandbox via crafted HTML. V8's WebAssembly Liftoff compiler fails to clear the high word of i32 register parameters, allowing a corrupted sandbox to pass i64 values into i32 callees. Exploitation requires crafted-page rendering and prior in-sandbox corruption; the escape crosses V8's memory-isolation boundary.

CVSS severity9.6
Critical
EPSS probability0.35%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Inappropriate implementation in V8 in Google Chrome before 126.0.6478.54 allows remote attackers to escape the sandbox via crafted HTML. V8's WebAssembly Liftoff compiler fails to clear the high word of i32 register parameters, allowing a corrupted sandbox to pass i64 values into i32 callees. Exploitation requires crafted-page rendering and prior in-sandbox corruption; the escape crosses V8's memory-isolation boundary.

The record

CVE
CVE-2024-7024
Published
Sep 23, 2024
Updated
Sep 25, 2024
Vendor
Google Cloud
Product
Google Chrome
Classifications
CWE-787, CWE-119, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 23, 2024CVE publishedPublication date reported by the CVE source.
  2. Sep 25, 2024Record 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

9.6NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
9.3CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N

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 exploitPublished

Weakness, pattern, technique

CWE-787Out-of-bounds Write
CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer
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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