CVE-2026-14093 Overview
CVE-2026-14093 is a use-after-free vulnerability [CWE-416] in the Cast component of Google Chrome prior to version 150.0.7871.47. An attacker who has already compromised the renderer process can leverage this flaw to perform a sandbox escape through a crafted HTML page. A successful sandbox escape allows code execution outside the constrained renderer environment, breaking a core Chromium security boundary. The issue affects Chrome on Windows, macOS, and Linux. Google addressed the vulnerability in the Stable channel update for desktop released in June 2026. While Chromium's internal severity rating is Low, the NVD scoring reflects the higher impact of a chained sandbox escape.
Critical Impact
Attackers who compromise the renderer can escape the Chrome sandbox and execute code at the browser process privilege level via a crafted HTML page.
Affected Products
- Google Chrome prior to 150.0.7871.47 on Microsoft Windows
- Google Chrome prior to 150.0.7871.47 on Apple macOS
- Google Chrome prior to 150.0.7871.47 on Linux
Discovery Timeline
- 2026-06-30 - CVE-2026-14093 published to NVD
- 2026-07-01 - Last updated in NVD database
Technical Details for CVE-2026-14093
Vulnerability Analysis
The vulnerability resides in the Cast subsystem of Chrome, which handles media casting to remote display devices. A use-after-free condition occurs when the Cast code continues to reference a heap object after it has been deallocated. When an attacker triggers the freed object's reuse, the dangling pointer permits control over object memory, function pointers, or virtual table entries.
Exploitation requires the attacker to have already compromised the renderer process. From that foothold, a crafted HTML page drives the Cast interface into the vulnerable state, enabling code execution in the higher-privileged browser process. This breaks the Chromium site isolation and sandbox model, which is the primary barrier between web content and the host operating system.
User interaction is required, as the target must load the malicious page. The vulnerability's scope change reflects that renderer-level compromise escalates into the trusted browser process.
Root Cause
The root cause is improper object lifetime management in the Cast implementation. A reference to a heap-allocated object persists after the object has been freed, producing a dangling pointer that can be dereferenced through subsequent Cast operations initiated by the attacker.
Attack Vector
The attack is network-based and delivered through a malicious or attacker-controlled web page. The attacker first exploits a separate renderer bug to gain code execution inside the sandboxed renderer. The attacker then serves crafted HTML that manipulates the Cast component to reach the use-after-free path, escaping the sandbox.
The vulnerability manifests in the Cast component's object lifecycle. See the Chromium Issue Tracker Entry and the Google Chrome Stable Update for vendor references.
Detection Methods for CVE-2026-14093
Indicators of Compromise
- Chrome browser processes spawning unexpected child processes such as command shells or scripting hosts.
- Chrome versions below 150.0.7871.47 running on managed endpoints after the patch release date.
- Unusual outbound connections from chrome.exe following visits to untrusted web pages.
Detection Strategies
- Inventory installed Chrome versions across the fleet and flag any build older than 150.0.7871.47.
- Monitor for renderer-to-browser process anomalies, including unexpected memory allocations and crashes referencing the Cast module.
- Correlate browser crash telemetry with subsequent process creation events that deviate from Chrome's normal child process tree.
Monitoring Recommendations
- Enable endpoint telemetry that captures process lineage from chrome.exe and its renderer subprocesses.
- Ingest browser crash reports into a centralized logging pipeline for pattern analysis.
- Alert on Chrome processes writing executables, loading unsigned modules, or performing token manipulation.
How to Mitigate CVE-2026-14093
Immediate Actions Required
- Update Google Chrome to version 150.0.7871.47 or later on all Windows, macOS, and Linux endpoints.
- Force a browser restart after deployment to ensure the patched binaries are loaded into memory.
- Verify enterprise policy settings enforce automatic Chrome updates and prevent version rollback.
Patch Information
Google released the fix in the Stable channel update for desktop. Administrators should reference the Google Chrome Stable Update advisory and deploy version 150.0.7871.47 or later. Chromium-based browsers that consume upstream patches should be updated once their vendors ship the corresponding release.
Workarounds
- Disable the Cast feature through enterprise policy where casting functionality is not required.
- Restrict browsing to trusted domains using allowlist-based web filtering until patches are fully deployed.
- Apply site isolation and strict process-per-site enforcement to reduce the reach of a compromised renderer.
# Verify Chrome version on Linux endpoints
google-chrome --version
# Example enterprise policy fragment to disable Cast (Windows registry)
# HKLM\Software\Policies\Google\Chrome\EnableMediaRouter = 0
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
