CVE-2024-0809Network attack vector

Autofill restriction bypass via crafted HTML

Published Jan 23, 2024 · Updated May 15, 2025

Inappropriate Autofill implementation in Google Chrome before 121.0.6167.85 allows remote attackers to bypass restrictions via crafted HTML. The public Chrome release and restricted issue record do not disclose which Autofill code path incorrectly accepts page-controlled input. A user must load the crafted page and interact with Autofill; the published impact is unauthorized modification of Autofill-controlled form behavior.

CVSS severity4.3
Medium
EPSS probability0.41%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Inappropriate Autofill implementation in Google Chrome before 121.0.6167.85 allows remote attackers to bypass restrictions via crafted HTML. The public Chrome release and restricted issue record do not disclose which Autofill code path incorrectly accepts page-controlled input. A user must load the crafted page and interact with Autofill; the published impact is unauthorized modification of Autofill-controlled form behavior.

The record

CVE
CVE-2024-0809
Published
Jan 23, 2024
Updated
May 15, 2025
Vendor
Google Cloud
Product
Google Chrome
Classifications
CWE-693
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 23, 2024CVE publishedPublication date reported by the CVE source.
  2. May 15, 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=121.0.6167.85 <121.0.6167.85

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Google Cloud · Google Chromeversion=121.0.6167.85 <121.0.6167.85

Published CVSS scores

4.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
4.3CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/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 exploitUnconfirmed

Weakness, pattern, technique

CWE-693Protection Mechanism Failure

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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