Full Report
Google has released security updates to address 74 vulnerabilities, including one that has come under active exploitation in the wild. The high-severity vulnerability, tracked as CVE-2026-11645 (CVSS score: 8.8), has been described as an out-of-bounds memory access in V8, Chrome's JavaScript and WebAssembly engine. "Out-of-bounds read and write in V8 in Google Chrome prior to 149.0.7827.103
Analysis Summary
# Vulnerability: Google Chrome V8 Out-of-Bounds Memory Access
## CVE Details
- **CVE ID:** CVE-2026-11645
- **CVSS Score:** 8.8 (High)
- **CWE:** Out-of-bounds Read and Write (Memory Access)
## Affected Systems
- **Products:** Google Chrome and Chromium-based browsers (Microsoft Edge, Brave, Opera, Vivaldi).
- **Versions:** Google Chrome versions prior to 149.0.7827.103.
- **Configurations:** Systems running the V8 JavaScript and WebAssembly engine within the browser.
## Vulnerability Description
A high-severity flaw exists in the V8 engine used by Google Chrome. The vulnerability is characterized as an out-of-bounds (OOB) memory access (both read and write). This weakness allows a remote attacker to trigger memory corruption by enticing a user to visit a specially crafted HTML page. Success in exploiting this flaw enables the attacker to execute arbitrary code within the confines of the browser's sandbox.
## Exploitation
- **Status:** Exploited in the wild (Zero-day).
- **Complexity:** High (Implied by the requirement of a crafted HTML page and sandbox context).
- **Attack Vector:** Network (Remote via malicious website).
## Impact
- **Confidentiality:** High (Potential for unauthorized data access through memory reads).
- **Integrity:** High (Ability to write to memory and execute arbitrary code).
- **Availability:** High (Potential for application crashes and system instability).
## Remediation
### Patches
Update Google Chrome to the following versions or later:
- **Windows / macOS:** 149.0.7827.102/.103
- **Linux:** 149.0.7827.102
### Workarounds
- No specific workarounds were provided; immediate patching is the primary recommendation.
- As a general precaution, avoid visiting untrusted websites or clicking on suspicious links until the browser is updated.
## Detection
- **Indicators of Compromise:** Unusual browser crashes when loading specific HTML content or unexpected process behavior from the V8 engine.
- **Detection methods and tools:**
- Check browser version via **More > Help > About Google Chrome**.
- Security teams should monitor for the Chromium-based patch levels across the organization's fleet.
## References
- **Vendor Advisory:** hxxps[://]chromereleases[.]googleblog[.]com/2026/06/stable-channel-update-for-desktop_0153744567[.]html
- **NVD Entry:** hxxps[://]nvd[.]nist[.]gov/vuln/detail/CVE-2026-11645
- **Reporting Source:** hxxps[://]thehackernews[.]com/2026/06/chrome-v8-zero-day-cve-2026-11645[.]html