Security Resilience

CVE-2023-4762

Memory Safety in Fedoraproject Fedora 37 … 39

CISA KEVActive ExploitationEUVD ExploitedMemory Safety
Published
05 September 2023
Modified
24 October 2025
KEV Added
06 February 2024
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 0.41 99th percentile
Risk Priority 90 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-2023-4762 is a high-severity Type Confusion (CWE-843) vulnerability in Fedoraproject Fedora. 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; CISA has added it to the Known Exploited Vulnerabilities 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.

Type Confusion in the V8 JavaScript engine affected Google Chrome versions prior to 116.0.5845.179. The flaw, assigned CWE-843, carried a CVSS 3.1 score of 8.8 reflecting network attack vector, low complexity, and high impact on confidentiality, integrity, and availability.

A remote attacker could exploit the issue by serving a specially crafted HTML page; successful exploitation would allow arbitrary code execution in the context of the browser process after the victim visits the page.

The referenced Chrome stable-channel update and subsequent Fedora package advisories direct users to upgrade to version 116.0.5845.179 or later to eliminate the vulnerability.

The EPSS probability rose from a low post-disclosure baseline to a peak of 0.8264 on 2024-09-11 before receding to the current value of 0.5580, indicating that exploitation interest emerged more than a year after the initial publication.

EU & UK References

Vulnerability Data

Type Confusion in V8 in Google Chrome prior to 116.0.5845.179 allowed a remote attacker to execute arbitrary code via a crafted HTML page. (Chromium security severity: High)

CWE(s)
CWE-843
KEV Date Added
06 February 2024

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

CVE-2021-21224Same product: Debian Debian Linuxboth on KEV
CVE-2023-3079Same product: Debian Debian Linuxboth on KEV
CVE-2023-2033Same product: Debian Debian Linuxboth on KEV
CVE-2020-6418Same product: Debian Debian Linuxboth on KEV
CVE-2024-4947Same product: Fedoraproject Fedoraboth on KEV
CVE-2024-5274Same product: Fedoraproject Fedoraboth on KEV
CVE-2021-30551Same product: Fedoraproject Fedoraboth on KEV
CVE-2023-6345Same product: Debian Debian Linuxboth on KEV
CVE-2023-2724Same product: Debian Debian Linux
CVE-2023-3216Same product: Debian Debian Linux

Affected Assets

google
chrome
≤ 116.0.5845.179
debian
debian linux
11.0, 12.0
fedoraproject
fedora
37, 38, 39
microsoft
edge chromium
≤ 116.0.1938.76

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