Cyber 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 0.38 98th percentile
Risk Priority 90 floored blend · peak EPSS

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 Exploitation for Privilege Escalation (T1068); ranked in the top 2% 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

T1068 Exploitation for Privilege Escalation Privilege Escalation
Adversaries may exploit software vulnerabilities in an attempt to elevate privileges.
attack.mitre.org →
T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
T1203 Exploitation for Client Execution Execution
Adversaries may exploit software vulnerabilities in client applications to execute code.
attack.mitre.org →
T1210 Exploitation of Remote Services Lateral Movement
Adversaries may exploit remote services to gain unauthorized access to internal systems once inside of a network.
attack.mitre.org →
T1212 Exploitation for Credential Access Credential Access
Adversaries may exploit software vulnerabilities in an attempt to collect credentials.
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-2023-6345Same 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-2021-30551Same product: Fedoraproject Fedoraboth on KEV
CVE-2024-5274Same product: Fedoraproject Fedoraboth on KEV
CVE-2024-4947Same product: Fedoraproject Fedoraboth on KEV
CVE-2023-4352Same product: Debian Debian Linux
CVE-2021-37973Same product: Debian Debian Linuxboth on KEV
CVE-2021-37975Same product: Debian Debian Linuxboth on KEV

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
  • V3.2.3
  • 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 mostly match
prevents

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.8.29 Security testing in development and acceptance mostly match
finds

Security testing in development can detect type-confusion vulnerabilities through fuzzing and static analysis.

A.8.25 Secure development life cycle partial match
prevents

Secure SDLC mandates type-safe design and review that can catch type-confusion flaws.

A.8.26 Application security requirements partial match
prevents

Application security requirements can specify strong typing and interface contracts that reduce type confusion.

A.8.27 Secure system architecture and engineering principles partial match
prevents

Secure architecture principles promote type-safe languages and memory-safety mechanisms that mitigate type confusion.

A.8.28 Secure coding partial match
prevents

Secure coding standards directly forbid unsafe type casts and require static-analysis checks for type confusion.

References