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 (Awaiting 2026 Disclosure)
## CVE Details
- **CVE ID:** CVE-2026-3909, CVE-2026-3910
- **CVSS Score:** Not explicitly listed (Assessed as **High/Critical** severity by MS-ISAC)
- **CWE:**
- CVE-2026-3909: CWE-787 (Out-of-bounds Write)
- CVE-2026-3910: CWE-670 (Inappropriate Implementation)
## Affected Systems
- **Products:** Google Chrome Browser
- **Versions:**
- Windows and macOS: Versions prior to 146.0.7680.75/76
- Linux: Versions prior to 146.0.7680.75
- **Configurations:** Systems where users operate with high administrative privileges are at greater risk of full system compromise.
## Vulnerability Description
Google Chrome is affected by two primary security flaws:
1. **CVE-2026-3909:** An "Out-of-bounds write" vulnerability within **Skia** (the graphics engine). This type of memory corruption can lead to the execution of arbitrary code when the browser processes specially crafted visual content.
2. **CVE-2026-3910:** An "Inappropriate implementation" within the **V8** JavaScript engine. Logic or implementation flaws in V8 frequently allow attackers to bypass security sandboxes or achieve code execution through malicious scripts.
## Exploitation
- **Status:** **Exploited in the wild.** Google has confirmed that active exploits exist for both CVE-2026-3909 and CVE-2026-3910.
- **Complexity:** Medium (Requires crafting a drive-by compromise).
- **Attack Vector:** Network (Remote/Web-based). Exploitation typically occurs via "Drive-By Compromise" (T1189) where a user visits a malicious website.
## Impact
- **Confidentiality:** High (Attacker can view or steal sensitive data)
- **Integrity:** High (Attacker can change or delete data and install programs)
- **Availability:** High (Attacker can delete data or create new accounts with full rights)
## Remediation
### Patches
Update Google Chrome to the following versions or higher:
- **Windows and macOS:** 146.0.7680.75/76
- **Linux:** 146.0.7680.75
### Workarounds
- **Principle of Least Privilege:** Operate the browser using a non-privileged user account to limit the impact of code execution.
- **Application Isolation:** Use virtual environments or sandboxing for high-risk browsing.
## Detection
- **Indicators of Compromise:** Unusual browser crashes, unauthorized program installations, or creation of new user accounts.
- **Detection Methods and Tools:** Use automated vulnerability scanners to identify out-of-date Chrome installations. Monitor for "Drive-By Compromise" behaviors (T1189) using EDR tools.
## References
- Google Stable Channel Update: hxxps://chromereleases[.]googleblog[.]com/2026/03/stable-channel-update-for-desktop_12[.]html
- CVE-2026-3909: hxxps://cve[.]mitre[.]org/cgi-bin/cvename[.]cgi?name=CVE-2026-3909
- CVE-2026-3910: hxxps://cve[.]mitre[.]org/cgi-bin/cvename[.]cgi?name=CVE-2026-3910
- CIS Advisory: hxxps://www[.]cisecurity[.]org/advisory/multiple-vulnerabilities-in-google-chrome-could-allow-for-arbitrary-code-execution_2026-023