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 Type Confusion
## CVE Details
- **CVE ID:** CVE-2026-85046 (Most Critical), CVE-2026-85042, CVE-2026-85043, CVE-2026-85044, CVE-2026-85045, CVE-2026-85047, CVE-2026-85048, CVE-2026-85049, CVE-2026-85050, CVE-2026-85051, CVE-2026-85052, CVE-2026-85053.
- **CVSS Score:** Not explicitly listed (Assessed as **High/Critical** severity based on RCE impact).
- **CWE:** Multiple, including Type Confusion (CWE-843), Use After Free (CWE-416), Out of Bounds Write (CWE-787), and Race Condition (CWE-362).
## Affected Systems
- **Products:** Google Chrome Desktop
- **Versions:**
- Windows and Mac: Versions prior to 152.0.7977.82/.83
- Linux: Versions prior to 152.0.7977.82
- **Configurations:** Systems where users operate with administrative privileges are at higher risk of full system compromise.
## Vulnerability Description
Google Chrome is affected by multiple memory safety and logic flaws. The most severe flaw is a **Type Confusion in the V8 JavaScript engine (CVE-2026-85046)**. Type confusion occurs when the program allocates a resource using one "type" but later accesses it using a different, incompatible "type," leading to memory corruption. Other identified flaws include:
- **Use After Free:** DevTools, Compositing, and Skia components.
- **Out of Bounds Read/Write:** CrashReporting and WebGL.
- **Race Condition:** V8 engine.
- **Incomplete Cleanup/Improper Exposure:** Network and CacheStorage.
## Exploitation
- **Status:** **Exploited in the wild.** Google reports an exploit exists for **CVE-2026-85046**.
- **Complexity:** Medium (Requires user interaction/Drive-by visit).
- **Attack Vector:** Network (Remote).
## Impact
- **Confidentiality:** High (Ability to view data).
- **Integrity:** High (Ability to change/delete data and install programs).
- **Availability:** High (Ability to crash systems or delete accounts).
## Remediation
### Patches
Update to the following versions immediately:
- **Windows/Mac:** 152.0.7977.82/.83 or later.
- **Linux:** 152.0.7977.82 or later.
### Workarounds
- **Principle of Least Privilege:** Operate using non-privileged user accounts to limit the scope of potential code execution.
- **Isolation:** Restrict execution of untrusted code to virtualized environments or sandboxes.
## Detection
- **Indicators of Compromise:** Unusual outbound network traffic from browser processes; unexpected creation of new user accounts or unauthorized program installations.
- **Detection Methods:** Monitor for outdated Chrome versions via endpoint management tools (e.g., Tenable, Qualys, or Microsoft Endpoint Manager).
## References
- **Vendor Advisory:** hxxps://chromereleases[.]googleblog[.]com/2026/09/stable-channel-update-for-desktop_01882797386[.]html
- **CVE Mitre (Example):** hxxps://cve[.]mitre[.]org/cgi-bin/cvename[.]cgi?name=CVE-2026-85046
- **MS-ISAC Advisory:** 2026-088