CVE-2023-4362
Published: 15 August 2023
Summary
CVE-2023-4362 is a high-severity Out-of-bounds Write (CWE-787) vulnerability in Debian Debian Linux. Its CVSS base score is 8.8 (High).
Operationally, ranked in the top 3.7% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis
CVE-2023-4362 is a heap buffer overflow in the Mojom IDL component of Google Chrome versions prior to 116.0.5845.96. The flaw resides in the browser's inter-process communication handling and can result in heap corruption when processing specially crafted input.
A remote attacker who has already compromised the renderer process and obtained control of a WebUI process can trigger the vulnerability by serving a crafted HTML page, potentially achieving further memory corruption within the affected Chrome instance. The reported CVSS 3.1 score of 8.8 reflects network attack vector, low complexity, and high impact on confidentiality, integrity, and availability.
Chrome stable channel updates released on 15 August 2023 address the issue by advancing to version 116.0.5845.96; downstream distributions such as Fedora and Gentoo have issued corresponding package updates that enforce the patched Chromium build.
EPSS for the CVE rose from lower values to a peak of 0.2555 on 2025-12-11 before receding to the current 0.2278, indicating measurable post-disclosure exploitation interest that warrants renewed attention.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-54226
Vulnerability details
Heap buffer overflow in Mojom IDL in Google Chrome prior to 116.0.5845.96 allowed a remote attacker who had compromised the renderer process and gained control of a WebUI process to potentially exploit heap corruption via a crafted HTML page. (Chromium…
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security severity: Medium)
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Out-of-bounds writes that corrupt control flow or inject shellcode are rendered non-executable by the same memory protections.