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 (October 2026)
## CVE Details
- **CVE ID:** CVE-2026-110136 through CVE-2026-110172 (37 distinct CVEs)
- **CVSS Score:** Not explicitly provided; rated as **High/Medium** risk by MS-ISAC.
- **CWE:**
- CWE-416: Use After Free (Dominant flaw type)
- CWE-120/121: Buffer Overflow
- CWE-843: Type Confusion
- CWE-457: Use of Uninitialized Variable
- CWE-285: Improper Authorization
## Affected Systems
- **Products:** Google Chrome Browser
- **Versions:**
- Chrome prior to 155.0.8059.79/.80 (Windows and Mac)
- Chrome prior to 155.0.8059.79 (Linux)
- **Configurations:** Systems where the browser is run with administrative privileges are at higher risk.
## Vulnerability Description
Google Chrome is affected by multiple security flaws, the most critical being **Use-After-Free (UAF)** and **Buffer Overflow** vulnerabilities across various components, including the V8 JavaScript engine, Media, PDFium, and Mojo. These memory corruption issues allow an attacker to execute arbitrary code within the context of the logged-on user. If the user has administrative rights, the attacker can gain full control of the affected system, including the ability to install programs, manipulate data, and create new user accounts.
## Exploitation
- **Status:** Not currently exploited in the wild; no public PoC reported at the time of advisory.
- **Complexity:** Medium
- **Attack Vector:** Network (Drive-by Compromise)
## Impact
- **Confidentiality:** High (Ability to view/access all user data)
- **Integrity:** High (Ability to change/delete data and install programs)
- **Availability:** High (Potential for system instability or full takeover)
## Remediation
### Patches
Update Google Chrome to the following versions or higher:
- **Windows/Mac:** 155.0.8059.79/.80
- **Linux:** 155.0.8059.79
### Workarounds
- **Least Privilege:** Operate the browser using a standard user account rather than an administrative account to limit the impact of a successful compromise.
- **Browser Isolation:** Utilize sandboxing or virtualized browser environments for high-risk web surfing.
## Detection
- **Indicators of Compromise:** Unusual outbound network traffic from the Chrome process or unexpected file writes to system directories.
- **Detection Methods:**
- Verify Chrome version via `chrome://settings/help`.
- Use automated vulnerability scanners (e.g., Nessus, Qualys) to identify outdated browser instances.
## References
- **Vendor Advisory:** hxxps[://]chromereleases[.]googleblog[.]com/2026/10/stable-channel-update-for-desktop_01668083673[.]html
- **CVE Database:** hxxps[://]cve[.]mitre[.]org/cgi-bin/cvename[.]cgi?name=CVE-2026-110152
- **MS-ISAC Advisory:** 2026-116