Security Resilience

CVE-2023-6702

Memory Safety in Google Chrome ≤ 120.0.6099.109

Memory Safety
Published
14 December 2023
Modified
04 November 2025
Patch / advisory
View advisory
CVSS Score v3.1 8.8
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS Score 0.44 99th percentile
Risk Priority 86 floored blend · peak EPSS

CVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.

Summary

CVE-2023-6702 is a high-severity Type Confusion (CWE-843) vulnerability in Google Chrome. Its CVSS base score is 8.8 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Junk Data (T1001.001); ranked in the top 1% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

Deeper analysis AI-assisted summary

Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.

CVE-2023-6702 is a type confusion vulnerability in the V8 JavaScript engine within Google Chrome versions prior to 120.0.6099.109. The flaw, tracked under CWE-843, can result in heap corruption when processing specially crafted input and carries a CVSS 3.1 base score of 8.8.

A remote attacker can exploit the issue by persuading a user to visit a malicious HTML page, after which successful exploitation may allow arbitrary code execution with the privileges of the Chrome process. The attack requires no authentication and only user interaction in the form of page visitation.

Chrome stable channel updates released on 12 December 2023 upgraded the affected component to version 120.0.6099.109, and downstream distributions such as Fedora and Gentoo issued corresponding package updates to address the same defect.

EPSS scores for the CVE have remained near 0.58 since disclosure, indicating sustained but not sharply increasing exploitation interest.

EU & UK References

Vulnerability Data

Type confusion in V8 in Google Chrome prior to 120.0.6099.109 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)

CWE(s)
CWE-843

Related Threats

MITRE ATT&CK Enterprise Techniques

T1001.001 Junk Data Command And Control
Adversaries may add junk data to protocols used for command and control to make detection more difficult.
attack.mitre.org →
T1003 OS Credential Dumping Credential Access
Adversaries may attempt to dump credentials to obtain account login and credential material, normally in the form of a hash or a clear text password.
attack.mitre.org →
T1003.005 Cached Domain Credentials Credential Access
Adversaries may attempt to access cached domain credentials used to allow authentication to occur in the event a domain controller is unavailable.
attack.mitre.org →
T1003.006 DCSync Credential Access
Adversaries may attempt to access credentials and other sensitive information by abusing a Windows Domain Controller's application programming interface (API)(Citation: Microsoft DRSR Dec 2017) (Citation: Microsoft GetNCCChanges) (Citati…
attack.mitre.org →
T1005 Data from Local System Collection
Adversaries may search local system sources, such as file systems, configuration files, local databases, virtual machine files, or process memory, to find files of interest and sensitive data prior to Exfiltration.
attack.mitre.org →
T1011.001 Exfiltration Over Bluetooth Exfiltration
Adversaries may attempt to exfiltrate data over Bluetooth rather than the command and control channel.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

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CVE-2024-0518Same product: Fedoraproject Fedora
CVE-2024-5838Same product: Fedoraproject Fedora
CVE-2024-4058Same product: Fedoraproject Fedora
CVE-2024-1938Same product: Fedoraproject Fedora
CVE-2024-5843Same product: Fedoraproject Fedora
CVE-2024-5837Same product: Fedoraproject Fedora
CVE-2024-4947Same product: Fedoraproject Fedora
CVE-2024-5158Same product: Fedoraproject Fedora

Affected Assets

google
chrome
≤ 120.0.6099.109
fedoraproject
fedora
38
microsoft
edge chromium
≤ 120.0.2210.77

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)

—

Detect
Catch it (NIST detect / respond)

—

Harden
Shrink the surface (DISA STIG)

—

Validate
Prove the fix (OWASP ASVS)
  • V1.5.2
  • V15.3.5

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.PS-06 partial match
blocks

Secure SDLC practices directly prevent type-confusion flaws via safe typing, static analysis, and code review while the control itself addresses many additional weaknesses.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.5.14 Information transfer partial match
removes
A.5.15 Access control partial match
removes
A.5.16 Identity management partial match
removes
A.5.17 Authentication information partial match
removes
A.5.18 Access rights partial match
removes
A.8.10 Information deletion partial match
removes

References