CVE-2023-1820Network attack vector

Heap corruption via Browser History buffer overflow

Published Apr 4, 2023 · Updated Feb 13, 2025

Heap buffer overflow in Google Chrome Browser History before 112.0.5615.49 allows remote attackers to corrupt heap memory via crafted HTML. Google identifies the Browser History component, but the restricted issue record leaves the faulty allocation or write operation undisclosed. Exploitation requires a user to open a crafted page and perform specific UI interaction; the published record establishes heap corruption but no more specific outcome.

CVSS severity8.8
High
EPSS probability0.97%
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 Google Chrome Browser History before 112.0.5615.49 allows remote attackers to corrupt heap memory via crafted HTML. Google identifies the Browser History component, but the restricted issue record leaves the faulty allocation or write operation undisclosed. Exploitation requires a user to open a crafted page and perform specific UI interaction; the published record establishes heap corruption but no more specific outcome.

The record

CVE
CVE-2023-1820
Published
Apr 4, 2023
Updated
Feb 13, 2025
Vendor
Google Cloud
Product
Google Chrome
Classifications
CWE-787, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 4, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 13, 2025Record 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=0 <112.0.5615.49
  2. Affected versionversion=112.0.5615.49 <112.0.5615.49

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Google Cloud · Google Chromeversion=0 <112.0.5615.49; version=112.0.5615.49 <112.0.5615.49

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
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

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Your stack

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