CVE-2024-9121Network attack vector

Out-of-bounds memory access through crafted HTML

Published Sep 24, 2024 · Updated Sep 26, 2024

Out-of-bounds memory access in V8 in Google Chrome before 129.0.6668.70 allows remote attackers to access memory via crafted HTML. Google has not published the affected V8 code locus or the incorrect operation that permits the access; the linked issue remains restricted. Opening attacker-controlled HTML is required, and published evidence does not establish code execution or a sandbox escape.

CVSS severity8.8
High
EPSS probability0.51%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds memory access in V8 in Google Chrome before 129.0.6668.70 allows remote attackers to access memory via crafted HTML. Google has not published the affected V8 code locus or the incorrect operation that permits the access; the linked issue remains restricted. Opening attacker-controlled HTML is required, and published evidence does not establish code execution or a sandbox escape.

The record

CVE
CVE-2024-9121
Published
Sep 24, 2024
Updated
Sep 26, 2024
Vendor
Google Cloud
Product
Google Chrome
Classifications
CWE-787, T1189, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 24, 2024CVE publishedPublication date reported by the CVE source.
  2. Sep 26, 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 <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

8.8NIST NVDCVSS: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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-787Out-of-bounds Write
T1189Drive-by Compromise
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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