CVE-2023-4763Network attack vector

Heap corruption via Networks use-after-free

Published Sep 5, 2023 · Updated May 5, 2025

Use-after-free in Google Chrome before 116.0.5845.179 allows remote attackers to trigger heap corruption via a crafted HTML page. The Networks component accesses an object after it has been freed while handling attacker-controlled page content. Exploitation requires a user to load the page; the record confirms heap corruption and does not state code execution.

CVSS severity8.8
High
EPSS probability1.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in Google Chrome before 116.0.5845.179 allows remote attackers to trigger heap corruption via a crafted HTML page. The Networks component accesses an object after it has been freed while handling attacker-controlled page content. Exploitation requires a user to load the page; the record confirms heap corruption and does not state code execution.

The record

CVE
CVE-2023-4763
Published
Sep 5, 2023
Updated
May 5, 2025
Vendor
Google Cloud
Product
Google Chrome
Classifications
CWE-416, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 5, 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=116.0.5845.179 <116.0.5845.179

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Google Cloud · Google Chromeversion=116.0.5845.179 <116.0.5845.179

Published CVSS scores

8.8NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
10.0NVDAV:N/AC:L/Au:N/C:C/I:C/A:C

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-416Use After Free
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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