CVE-2026-5279
Published: 01 April 2026
Summary
CVE-2026-5279 is a high-severity Classic Buffer Overflow (CWE-120) 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 25.8th 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 SI-16 (Memory Protection).
Deeper analysis
CVE-2026-5279 is an object corruption vulnerability in the V8 JavaScript engine within Google Chrome versions prior to 146.0.7680.178. Published on 2026-04-01, it carries 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 associated with CWE-120 (Buffer Copy without Checking Size of Input). The issue was rated as high severity by Chromium security.
A remote attacker can exploit this vulnerability by crafting an HTML page that, when loaded by a user in an affected Chrome browser, triggers object corruption in V8. This requires user interaction, such as visiting a malicious site, but no special privileges. Successful exploitation allows the attacker to execute arbitrary code within the browser's sandbox.
Chrome's stable channel update for desktop, documented at https://chromereleases.googleblog.com/2026/03/stable-channel-update-for-desktop_31.html, and the corresponding Chromium issue at https://issues.chromium.org/issues/490642836 address the vulnerability. Users should update to Chrome 146.0.7680.178 or later to mitigate the risk.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2026-17791
Vulnerability details
Object corruption in V8 in Google Chrome prior to 146.0.7680.178 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: High)
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Vulnerability enables drive-by compromise via malicious HTML page (T1189) and client-side exploitation for arbitrary code execution (T1203).
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
SI-2 requires timely identification, reporting, and patching of flaws like CVE-2026-5279 in Chrome's V8 engine to prevent exploitation via crafted HTML pages.
SI-16 implements memory protection mechanisms such as ASLR and stack canaries that mitigate object corruption vulnerabilities like CWE-120 in V8.
SI-3 deploys malicious code protection at endpoints to scan and block crafted HTML pages or exploit attempts targeting the V8 vulnerability.