CVE-2024-12692Network attack vector

Heap corruption via mismatched WebAssembly struct mutability

Published Dec 18, 2024 · Updated Jan 7, 2025

Type confusion in V8 in Google Chrome before 131.0.6778.204 allows remote attackers to corrupt heap memory via a crafted HTML page. V8's canonical WebAssembly struct comparison checked field types but omitted field mutability, causing mutable and immutable structures to be treated as equal. A user must load the crafted page, after which the resulting type confusion can corrupt the browser process heap.

CVSS severity8.8
High
EPSS probability7.19%
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 in Google Chrome before 131.0.6778.204 allows remote attackers to corrupt heap memory via a crafted HTML page. V8's canonical WebAssembly struct comparison checked field types but omitted field mutability, causing mutable and immutable structures to be treated as equal. A user must load the crafted page, after which the resulting type confusion can corrupt the browser process heap.

The record

CVE
CVE-2024-12692
Published
Dec 18, 2024
Updated
Jan 7, 2025
Vendor
Google Cloud
Product
Google Chrome
Classifications
CWE-843, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 18, 2024CVE publishedPublication date reported by the CVE source.
  2. Jan 7, 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=131.0.6778.204 <131.0.6778.204

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Google Cloud · Google Chromeversion=131.0.6778.204 <131.0.6778.204

Published CVSS scores

8.8NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
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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