CVE-2023-0139Network attack vector

Download restriction bypass via insufficient input validation

Published Jan 10, 2023 · Updated Aug 2, 2024

Insufficient input validation in Google Chrome Downloads before 109.0.5414.74 on Windows allows remote attackers to bypass download restrictions. Google's public advisory identifies the Downloads component but does not disclose the validation locus or the untrusted value that is accepted. A user must open a crafted HTML page; successful exploitation circumvents a Windows download protection without reported code execution or data disclosure.

CVSS severity6.5
Medium
EPSS probability0.59%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Insufficient input validation in Google Chrome Downloads before 109.0.5414.74 on Windows allows remote attackers to bypass download restrictions. Google's public advisory identifies the Downloads component but does not disclose the validation locus or the untrusted value that is accepted. A user must open a crafted HTML page; successful exploitation circumvents a Windows download protection without reported code execution or data disclosure.

The record

CVE
CVE-2023-0139
Published
Jan 10, 2023
Updated
Aug 2, 2024
Vendor
Google Cloud
Product
Google Chrome
Classifications
CWE-20, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 10, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 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=unspecified <109.0.5414.74

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Google Cloud · Google Chromeversion=unspecified <109.0.5414.74

Published CVSS scores

6.5NIST National Vulnerability DatabaseCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/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 exploitUnconfirmed

Weakness, pattern, technique

CWE-20Improper Input Validation
T1189Drive-by Compromise

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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