Full Report
Google paid researcher a tidy $55K bounty for its discovery
Analysis Summary
# Vulnerability: Chrome V8 Out-of-Bounds Memory Access
## CVE Details
- **CVE ID:** CVE-2026-11645
- **CVSS Score:** Not explicitly listed in article (Typically High/Critical for V8 RCE)
- **CWE:** CWE-125 (Out-of-bounds Read) or CWE-787 (Out-of-bounds Write)
## Affected Systems
- **Products:** Google Chrome; Chromium-based browsers (Edge, Brave, Opera, etc.)
- **Versions:** Versions prior to the Stable Channel update released June 9, 2026.
- **Configurations:** Default installations on Windows, macOS, and Linux.
## Vulnerability Description
CVE-2026-11645 is an out-of-bounds memory access vulnerability located in the **V8 JavaScript engine**, the component responsible for executing JS code within Chrome. While specific technical details are currently restricted by Google to prevent further exploitation, this class of bug typically allows an attacker to read or write memory outside of the intended buffer. In the context of a browser engine, this often leads to arbitrary code execution (RCE) within the browser's sandbox.
## Exploitation
- **Status:** **Exploited in the wild** (Zero-day).
- **Complexity:** High (Implied by the $55,000 bounty and V8 architecture).
- **Attack Vector:** Network (Remote). Typically triggered by a user visiting a malicious or compromised webpage.
## Impact
- **Confidentiality:** High (Potential for memory disclosure or data theft).
- **Integrity:** High (Potential for remote code execution).
- **Availability:** High (Potential for browser crashes).
## Remediation
### Patches
- **Google Chrome:** Update to the latest Stable Channel release for Windows, macOS, and Linux (refer to Official Chrome Releases blog for specific build numbers based on OS).
### Workarounds
- There are no viable functional workarounds. The primary mitigation is a browser restart to apply the security update.
## Detection
- **Indicators of Compromise:** High-volume crashes of the Chrome renderer process; unusual outbound network traffic from the browser process to unknown IPs.
- **Detection Methods:** Monitor for outdated Chrome versions within the environment using Endpoint Detection and Response (EDR) or vulnerability scanners.
## References
- **Vendor Advisory:** hxxps[://]chromereleases[.]googleblog[.]com/2026/06/stable-channel-update-for-desktop_0153744567[.]html
- **CVE Database:** hxxps[://]cve[.]mitre[.]org/cgi-bin/cvename[.]cgi?name=CVE-2026-11645