CVE-2026-4450
Published: 20 March 2026
Summary
CVE-2026-4450 is a high-severity Out-of-bounds Write (CWE-787) vulnerability in Google Chrome. Its CVSS base score is 8.8 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Drive-by Compromise (T1189); ranked at the 19.7th 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 SC-39 (Process Isolation) and SI-16 (Memory Protection).
Deeper analysis
CVE-2026-4450 is an out-of-bounds write vulnerability (CWE-787) in the V8 JavaScript engine within Google Chrome prior to version 146.0.7680.153. This issue enables a remote attacker to potentially exploit heap corruption by processing a crafted HTML page. Chromium security severity is rated as High, with 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).
A remote attacker can exploit this vulnerability over the network with low complexity and no privileges required, though it depends on user interaction such as visiting a malicious webpage. Successful exploitation could lead to high-impact consequences, including unauthorized disclosure of information, modification of data, and denial of service through heap corruption.
Google Chrome version 146.0.7680.153 addresses this vulnerability. Security practitioners should consult the Chrome stable channel update at https://chromereleases.googleblog.com/2026/03/stable-channel-update-for-desktop_18.html and the associated Chromium issue at https://issues.chromium.org/issues/487746373 for patch details and advisory information.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2026-13467
Vulnerability details
Out of bounds write in V8 in Google Chrome prior to 146.0.7680.153 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Out-of-bounds write in V8 JavaScript engine enables heap corruption via crafted HTML page, facilitating drive-by compromise (T1189) and exploitation for client execution (T1203) with user interaction limited to visiting the malicious webpage.
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Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Timely flaw remediation through patching directly eliminates the out-of-bounds write vulnerability in Chrome's V8 engine as addressed in version 146.0.7680.153.
Memory protection safeguards such as ASLR and DEP directly counter heap corruption from out-of-bounds writes in the V8 JavaScript engine.
Process isolation via browser sandboxing confines heap corruption exploits within the renderer process, preventing system-wide compromise.