CVE-2024-9122Network attack vector

Out-of-bounds memory access via type confusion

Published Sep 24, 2024 · Updated Sep 25, 2024

Type confusion in V8 in Google Chrome before 129.0.6668.70 allows remote attackers to access memory out of bounds via crafted HTML. Google has not disclosed the responsible V8 code path or the incompatible type assumption that permits the out-of-bounds access. A user must load attacker-controlled HTML; the published record establishes memory access but does not specify whether it is a read or write.

CVSS severity8.8
High
EPSS probability6.26%
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 129.0.6668.70 allows remote attackers to access memory out of bounds via crafted HTML. Google has not disclosed the responsible V8 code path or the incompatible type assumption that permits the out-of-bounds access. A user must load attacker-controlled HTML; the published record establishes memory access but does not specify whether it is a read or write.

The record

CVE
CVE-2024-9122
Published
Sep 24, 2024
Updated
Sep 25, 2024
Vendor
Google Cloud
Product
Google Chrome
Classifications
CWE-843, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 24, 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

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <129.0.6668.70
  2. Affected versionversion=129.0.6668.70 <129.0.6668.70

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Google Cloud · Google Chromeversion=0 <129.0.6668.70; version=129.0.6668.70 <129.0.6668.70

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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