CVE-2023-3731

Heap corruption via Diagnostics use-after-free

Published Aug 1, 2023 · Updated Aug 2, 2024

Use after free in Google Chrome's Diagnostics on ChromeOS before 115.0.5790.131 allows attackers to corrupt heap memory via an extension. The published sources identify Ash/Diagnostics as the locus but do not disclose which object is freed or the operation that reuses it. Exploitation requires a user to install a crafted Chrome extension; the public record establishes heap corruption but does not specify code execution.

CVSS severityUnavailable
Unscored
EPSS probability0.36%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Use after free in Google Chrome's Diagnostics on ChromeOS before 115.0.5790.131 allows attackers to corrupt heap memory via an extension. The published sources identify Ash/Diagnostics as the locus but do not disclose which object is freed or the operation that reuses it. Exploitation requires a user to install a crafted Chrome extension; the public record establishes heap corruption but does not specify code execution.

The record

CVE
CVE-2023-3731
Published
Aug 1, 2023
Updated
Aug 2, 2024
Vendor
Google Cloud
Product
Google Chrome
Classifications
CWE-416, T1203
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Aug 1, 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

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=115.0.5790.131 <115.0.5790.131

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

Google Cloud · Google Chromeversion=115.0.5790.131 <115.0.5790.131

Published CVSS scores

No CVSS assessment is available in this record.

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)
VectorUnavailable
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-416Use After Free
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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo