CVE-2026-6314
Published: 15 April 2026
Summary
CVE-2026-6314 is a high-severity Out-of-bounds Write (CWE-787) vulnerability in Google Chrome. Its CVSS base score is 8.3 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploitation for Privilege Escalation (T1068); ranked at the 10.7th 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).
Threat & Defense at a Glance
Threat & Defense Details
Mitigating Controls (NIST 800-53 r5)AI
Directly mandates timely identification, reporting, and remediation of software flaws like the out-of-bounds write in Chrome's GPU process through patching.
Provides memory protection controls such as address space layout randomization and data execution prevention to mitigate exploitation of out-of-bounds writes causing memory corruption.
Enforces process isolation to contain compromises within the sandboxed GPU process, blocking escape to other system processes or the broader environment.
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
The out-of-bounds write in Chrome's GPU process enables memory corruption for sandbox escape, directly facilitating Exploitation for Privilege Escalation (T1068) and Exploitation for Client Execution (T1203) via crafted HTML page requiring user interaction.
NVD Description
Out of bounds write in GPU in Google Chrome prior to 147.0.7727.101 allowed a remote attacker who had compromised the GPU process to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: High)
Deeper analysisAI
CVE-2026-6314 is an out-of-bounds write vulnerability (CWE-787) in the GPU component of Google Chrome versions prior to 147.0.7727.101. This flaw affects the Chromium-based browser's rendering process, where improper bounds checking in GPU handling allows memory corruption. The issue carries a CVSS v3.1 base score of 8.3 (AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H), classified as High severity by Chromium security standards, and was publicly disclosed on April 15, 2026.
A remote attacker who has already compromised the GPU process can exploit this vulnerability via a crafted HTML page to potentially escape the browser's sandbox. Exploitation requires user interaction, such as visiting a malicious site, and involves high attack complexity over the network with no privileges needed. Successful exploitation grants high-impact confidentiality, integrity, and availability effects across the changed scope, enabling further system compromise beyond the sandboxed environment.
Chrome release advisories, including the stable channel update announced on chromereleases.googleblog.com and Chromium issue tracker entry 498782145, recommend mitigation by updating to Google Chrome 147.0.7727.101 or later, which patches the out-of-bounds write in the GPU process. Security practitioners should prioritize deployment of this update to affected systems and advise users to enable automatic updates.
Details
- CWE(s)