CVE-2023-0137Network attack vector

Heap corruption via Platform Apps buffer overflow

Published Jan 10, 2023 · Updated May 5, 2025

Heap buffer overflow in Platform Apps in Google Chrome on Chrome OS before 109.0.5414.74 allows attackers to corrupt heap memory via crafted HTML. The public record identifies the Platform Apps component but does not disclose the affected function, buffer, or size calculation that permits the out-of-bounds write. Exploitation requires a user to install a malicious extension and encounter its crafted page; the reported outcome is heap corruption, not demonstrated code execution.

CVSS severity8.8
High
EPSS probability0.50%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Heap buffer overflow in Platform Apps in Google Chrome on Chrome OS before 109.0.5414.74 allows attackers to corrupt heap memory via crafted HTML. The public record identifies the Platform Apps component but does not disclose the affected function, buffer, or size calculation that permits the out-of-bounds write. Exploitation requires a user to install a malicious extension and encounter its crafted page; the reported outcome is heap corruption, not demonstrated code execution.

The record

CVE
CVE-2023-0137
Published
Jan 10, 2023
Updated
May 5, 2025
Vendor
Google Cloud
Product
Google Chrome
Classifications
CWE-787, T1204.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 10, 2023CVE publishedPublication date reported by the CVE source.
  2. May 5, 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=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

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 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-787Out-of-bounds Write
T1204.002User Execution: Malicious File

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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