Full Report
Multiple vulnerabilities have been discovered in Google Chrome, the most severe of which could allow for arbitrary code execution. Successful exploitation of the most severe of these vulnerabilities could allow for arbitrary code execution in the context of the logged on user. Depending on the privileges associated with the user an attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. Users whose accounts are configured to have fewer user rights on the system could be less impacted than those who operate with administrative user rights.
Analysis Summary
# Vulnerability: Multiple Vulnerabilities in Google Chrome (Including Zero-Day)
## CVE Details
- **CVE ID:** CVE-2026-11645 (Primary focus due to active exploitation), CVE-2026-11628 through CVE-2026-11701.
- **CVSS Score:** Not explicitly listed (Severity categorized as **High/Critical**).
- **CWE:** CWE-416 (Use After Free), CWE-190 (Integer Overflow), CWE-125 (Out-of-bounds Read), CWE-843 (Type Confusion).
## Affected Systems
- **Products:** Google Chrome Browser
- **Versions:**
- Chrome prior to 149.0.7827.102/.103 for Windows and macOS
- Chrome prior to 149.0.7827.102 for Linux
- **Configurations:** Systems where users operate with administrative privileges are at higher risk.
## Vulnerability Description
Google Chrome is affected by multiple memory safety flaws. The most critical is an **Out-of-bounds memory access in V8** (the JavaScript engine), which can be leveraged for Arbitrary Code Execution (ACE). The majority of the other discovered flaws are **Use-After-Free (UAF)** vulnerabilities in various components including Ozone, Bluetooth, Extensions, and the V8 engine. These flaws occur when the program continues to use a pointer after it has been freed, potentially leading to the execution of attacker-controlled data.
## Exploitation
- **Status:** **Exploited in the wild** (Specifically CVE-2026-11645).
- **Complexity:** Medium to High.
- **Attack Vector:** Network (Remote / Drive-By Compromise).
## Impact
- **Confidentiality:** High (Attacker can view/steal sensitive data).
- **Integrity:** High (Attacker can change or delete data and create new accounts).
- **Availability:** High (Attacker can install malicious programs or crash the system).
## Remediation
### Patches
Apply the following updates immediately:
- **Windows and macOS:** Update to version **149.0.7827.102/.103** or later.
- **Linux:** Update to version **149.0.7827.102** or later.
### Workarounds
- **Least Privilege:** Run the browser using an account with non-administrative "standard user" rights to limit the impact of a successful compromise.
- **Web Filtering:** Block access to untrusted or known malicious sites to prevent "Drive-By" infections.
## Detection
- **Indicators of Compromise:** Unusual browser crashes followed by unauthorized file modifications or new local user accounts.
- **Detection Methods:**
- Monitor for Chrome processes spawning `cmd.exe`, `powershell.exe`, or other system shells.
- Software inventory scanning to identify outdated versions of `chrome.exe`.
## References
- **Vendor Advisory:** hxxps[://]chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop_0153744567.html
- **CVE MITRE:** hxxps[://]cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-11645
- **CIS Advisory:** hxxps[://]www.cisecurity.org/advisory/multiple-vulnerabilities-in-google-chrome-could-allow-for-arbitrary-code-execution_2026-054