CVE-2026-7337
Published: 28 April 2026
Summary
CVE-2026-7337 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 Exploitation for Client Execution (T1203); ranked at the 8.8th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
The strongest mitigations our analysis identified are NIST 800-53 SI-2 (Flaw Remediation) and RA-5 (Vulnerability Monitoring and Scanning).
Threat & Defense at a Glance
Threat & Defense Details
Mitigating Controls (NIST 800-53 r5)AI
Directly remediates the type confusion vulnerability by requiring timely installation of the Chrome patch to version 147.0.7727.138 or later.
Vulnerability scanning identifies systems running vulnerable Chrome versions affected by this specific CVE prior to exploitation.
Memory protection safeguards such as DEP and ASLR hinder arbitrary code execution from type confusion flaws in the V8 engine.
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
The type confusion flaw in the V8 JS/WebAssembly engine directly enables remote arbitrary code execution via a crafted HTML page in a client browser, matching Exploitation for Client Execution.
NVD Description
Type Confusion in V8 in Google Chrome prior to 147.0.7727.138 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: High)
Deeper analysisAI
CVE-2026-7337 is a type confusion vulnerability in the V8 JavaScript and WebAssembly engine within Google Chrome versions prior to 147.0.7727.138. This flaw, classified under CWE-843, enables a remote attacker to execute arbitrary code inside the browser's sandbox through a specially crafted HTML page. The vulnerability carries a Chromium security severity rating of High and a CVSS v3.1 base score of 8.8 (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H), highlighting its potential for significant impact despite requiring user interaction.
A remote attacker can exploit this vulnerability by tricking a user into visiting a malicious website or opening a crafted HTML page. No special privileges are needed, as it requires only network access and low complexity, but user interaction is necessary to trigger the type confusion in V8. Successful exploitation allows arbitrary code execution confined to the sandboxed environment, potentially leading to high levels of confidentiality, integrity, and availability impacts within the browser context.
Mitigation details are outlined in the Chrome Releases blog post announcing the stable channel update for desktop, which addresses this issue in version 147.0.7727.138 and later. Additional technical information is available in the Chromium issue tracker at issues.chromium.org/issues/500880819. Security practitioners should ensure Chrome is updated to the patched version to prevent exploitation.
Details
- CWE(s)