Full Report
Google Chrome security advisory (AV26-240)
Analysis Summary
# Vulnerability: Multiple Vulnerabilities in Google Chrome (including CVE-2026-3909)
## CVE Details
- **CVE ID:** CVE-2026-3909 (Primary focus)
- **CVSS Score:** Not explicitly listed in the advisory (Typically High/Critical for KEV entries)
- **CWE:** Not specified in the provided advisory.
## Affected Systems
- **Products:** Google Chrome for Desktop
- **Versions:**
- Windows: Versions prior to 146.0.7680.80
- macOS: Versions prior to 146.0.7680.80
- Linux: Versions prior to 146.0.7680.80
- **Configurations:** Default installations of Chrome Desktop.
## Vulnerability Description
While the specific technical root cause (e.g., Use-After-Free, Type Confusion) is not detailed in this high-level summary, the vulnerability resides within the Google Chrome browser engine. Based on its inclusion in the CISA KEV database, the flaw allows for successful exploitation by remote attackers, likely leading to arbitrary code execution within the context of the browser sandbox or sandbox escape.
## Exploitation
- **Status:** **Exploited in the wild** (Confirmed by CISA KEV Database)
- **Complexity:** Typically Medium to High for browser-based RCEs.
- **Attack Vector:** Network (Remote)
## Impact
- **Confidentiality:** High
- **Integrity:** High
- **Availability:** High
## Remediation
### Patches
Update Google Chrome to the following versions or later:
- **Windows/Mac:** 146.0.7680.80
- **Linux:** 146.0.7680.80
### Workarounds
- There are no practical workarounds for this vulnerability. Rapid patching is the only recommended course of action due to active exploitation.
## Detection
- **Indicators of compromise:** Monitor for unusual child processes spawning from `chrome.exe` or unexpected network connections originating from the browser process.
- **Detection methods and tools:**
- Vulnerability scanners should check for Chrome version strings lower than 146.0.7680.80.
- Review CISA’s Known Exploited Vulnerabilities (KEV) catalog for further updates.
## References
- [Google Chrome Security Advisory] hxxps[://]chromereleases[.]googleblog[.]com/2026/03/stable-channel-update-for-desktop_13[.]html
- [CISA KEV: CVE-2026-3909] hxxps[://]www[.]cisa[.]gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2026-3909
- [Cyber Centre Advisory] hxxps[://]www[.]cyber[.]gc[.]ca/en/alerts-advisories/google-chrome-security-advisory-av26-240