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 Use-After-Free Vulnerabilities in Google Chrome
## CVE Details
- **CVE ID:** CVE-2026-19556, CVE-2026-19557, CVE-2026-19558, CVE-2026-19559, CVE-2026-19560
- **CVSS Score:** Not explicitly provided in the source, but rated as **High/Critical** severity by context.
- **CWE:** CWE-416 (Use After Free)
## Affected Systems
- **Products:** Google Chrome Browser
- **Versions:**
- Chrome prior to 151.0.7922.137/.138 for Windows and Mac
- Chrome prior to 151.0.7922.137 for Linux
- **Configurations:** Systems where users operate with administrative privileges are at higher risk.
## Vulnerability Description
Multiple "Use-After-Free" (UAF) vulnerabilities exist within various components of the Google Chrome browser, specifically:
- **V8 Engine:** (CVE-2026-19556)
- **TabStrip:** (CVE-2026-19557)
- **Extensions:** (CVE-2026-19558)
- **HTML:** (CVE-2026-19559)
- **Blink Rendering Engine:** (CVE-2026-19560)
UAF flaws occur when a program continues to use a pointer after it has been freed, which can lead to the execution of arbitrary code if the memory is reallocated to an attacker-controlled payload.
## Exploitation
- **Status:** Not currently reported as exploited in the wild; No public PoC mentioned.
- **Complexity:** Medium (typical for browser UAF)
- **Attack Vector:** Network (Remote/Drive-by Compromise)
## Impact
- **Confidentiality:** High (Ability to view data)
- **Integrity:** High (Ability to change/delete data or create new accounts)
- **Availability:** High (Ability to install programs or cause system instability)
## Remediation
### Patches
Update Google Chrome to the following versions or later:
- **Windows/Mac:** 151.0.7922.137/.138
- **Linux:** 151.0.7922.137
### Workarounds
- **Principle of Least Privilege:** Operate the browser using a non-privileged user account to limit the scope of a potential compromise.
- **Application Sandboxing:** Restrict code execution to virtual environments or enhanced sandboxes.
## Detection
- **Indicators of Compromise:** Unusual browser crashes, unauthorized account creations, or unexpected software installations.
- **Detection methods:** Automated vulnerability scanners to identify out-of-date browser versions; Endpoint Detection and Response (EDR) tools to monitor for suspicious child processes spawning from `chrome.exe`.
## References
- Google Stable Channel Update: hxxps://chromereleases[.]googleblog[.]com/2026/08/stable-channel-update-for-desktop_01815628406[.]html
- CVE-2026-19556: hxxps://cve[.]mitre[.]org/cgi-bin/cvename[.]cgi?name=CVE-2026-19556
- CVE-2026-19557: hxxps://cve[.]mitre[.]org/cgi-bin/cvename[.]cgi?name=CVE-2026-19557
- CVE-2026-19558: hxxps://cve[.]mitre[.]org/cgi-bin/cvename[.]cgi?name=CVE-2026-19558
- CVE-2026-19559: hxxps://cve[.]mitre[.]org/cgi-bin/cvename[.]cgi?name=CVE-2026-19559
- CVE-2026-19560: hxxps://cve[.]mitre[.]org/cgi-bin/cvename[.]cgi?name=CVE-2026-19560