CVE-2026-11645: Google Chromium V8 Out-of-Bounds Read and Write Vulnerability
Summary
A critical vulnerability, CVE-2026-11645, has been identified in Google's Chromium V8 engine, allowing remote attackers to execute arbitrary code via a crafted HTML page. This flaw impacts various browsers using Chromium, including Chrome, Edge, and Opera, posing a significant risk of exploitation.
IFF Assessment
This vulnerability allows for arbitrary code execution, which is a severe threat to system integrity and data confidentiality, making it bad news for defenders.
Severity
This vulnerability has a high attack vector (network) and high impact (confidentiality, integrity, availability), and is likely to be exploited given its presence in widely used browsers. The out-of-bounds read and write can lead to code execution.
CISA KEV: Listed as actively exploited. Federal patch due: June 23, 2026. Known ransomware use: Unknown.
Defender Context
Defenders need to prioritize patching or applying mitigations for affected browsers immediately, as this vulnerability allows for remote code execution. The widespread use of Chromium means many users and systems are at risk, and attackers could leverage this flaw for various malicious purposes, including deploying ransomware or stealing sensitive data.