CVE-2026-4440
Published: 20 March 2026
Summary
CVE-2026-4440 is a high-severity Out-of-bounds Read (CWE-125) 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 24.0th 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-16 (Memory Protection) and SI-2 (Flaw Remediation).
Deeper analysis
CVE-2026-4440 is an out-of-bounds read and write vulnerability (CWE-125, CWE-787) in the WebGL component of Google Chrome prior to version 146.0.7680.153. Published on 2026-03-20, it has 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) and is rated Critical by Chromium security standards. The flaw allows a remote attacker to perform arbitrary read and write operations via a crafted HTML page.
A remote attacker without privileges can exploit this vulnerability over the network with low complexity by luring a user to interact with a malicious site, such as by visiting a crafted HTML page. Successful exploitation provides high-impact consequences across confidentiality, integrity, and availability, enabling potential full compromise of the affected browser instance.
Google's stable channel update for desktop Chrome, available at https://chromereleases.googleblog.com/2026/03/stable-channel-update-for-desktop_18.html, patches this issue in version 146.0.7680.153. Additional details on the fix are documented in the Chromium issue tracker at https://issues.chromium.org/issues/485935305.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2026-13447
Vulnerability details
Out of bounds read and write in WebGL in Google Chrome prior to 146.0.7680.153 allowed a remote attacker to perform arbitrary read/write via a crafted HTML page. (Chromium security severity: Critical)
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
OOB read/write in Chrome WebGL enables direct exploitation via crafted HTML page for drive-by browser compromise (T1189) and client application code execution (T1203).
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Directly mandates timely remediation of the specific WebGL out-of-bounds read/write flaw in Chrome via patching to version 146.0.7680.153.
Implements memory protection mechanisms that directly counter out-of-bounds read and write operations exploited through crafted HTML pages in WebGL.
Enforces process isolation in the browser's sandboxed renderer processes to limit the scope of compromise from WebGL vulnerabilities.