Chrome V8 Zero-Day Exploited in the Wild Enables Code Execution Inside Sandbox

Chrome V8 Zero-Day Exploited in the Wild Enables Code Execution Inside Sandbox Ravie LakshmananSep 09, 2026Vulnerability / Browser Security Google on Thursday released updates to patch 230 security vulnerabilities, including one that has come under active exploitation in the wild. The medium-severity vulnerability, assigned the CVE identifier CVE-2026-87491 (CVSS score: N/A), has been described as an out-of-bounds bug in V8, Chrome's JavaScript and WebAssembly engine. "Out-of-bounds write in V8 in Google Chrome prior to 153.0.8010.36 allowed a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page," reads a description of the flaw on the NIST National Vulnerability Database (NVD). Security researcher Jihyeon Jeong of Compsec Lab, Seoul National University, has been acknowledged for discovering and…