CVE-2026-14091: Google Chrome Use After Free Vulnerability

CVE-2026-14091 Overview

CVE-2026-14091 is a use-after-free vulnerability in the DevTools component of Google Chrome versions prior to 150.0.7871.47. A remote attacker can execute arbitrary code inside the Chrome sandbox by luring a user to a crafted HTML page. The flaw is tracked under CWE-416 and requires user interaction to trigger. Google has addressed the issue in the Stable channel update for desktop across Windows, macOS, and Linux platforms.

Critical Impact
Successful exploitation allows arbitrary code execution within the Chrome renderer sandbox, giving attackers a foothold that can be combined with a sandbox escape for full system compromise.

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-2026-14091 published to NVD
2026-07-02 - Last updated in NVD database

Technical Details for CVE-2026-14091

Vulnerability Analysis

The vulnerability is a use-after-free (UAF) condition inside Chrome's DevTools subsystem. DevTools manages inspector sessions, live object references, and debugger state tied to page contexts. When an object is freed but a dangling reference is later dereferenced, attacker-controlled data can occupy the reclaimed memory. This memory reuse enables control over virtual function pointers or object metadata, leading to arbitrary code execution inside the renderer process.

Exploitation requires the victim to load a crafted HTML page. The attack vector is network-based with low complexity and no privileges required, but user interaction is necessary. Because execution occurs within the Chrome sandbox, an attacker still needs a secondary sandbox escape to achieve full host compromise. Chromium rated the internal severity as Low, while the NVD assigns a higher score reflecting confidentiality, integrity, and availability impact.

Root Cause

The root cause is improper lifetime management of a DevTools object [CWE-416]. Code paths retain a raw pointer or reference to memory that has already been released by another handler, and subsequent access dereferences that freed memory. Details are tracked in the Chromium Issue Tracker Entry.

Attack Vector

An attacker hosts a malicious HTML page that triggers the vulnerable DevTools code path when visited. The page manipulates renderer state to reclaim freed memory with attacker-controlled contents. Delivery vectors include phishing links, malvertising, and compromised legitimate sites. Exploitation yields code execution constrained by the Chrome sandbox.

No verified proof-of-concept is publicly available. See the Chromium Issue Tracker Entry for technical details.

Detection Methods for CVE-2026-14091

Indicators of Compromise

Chrome renderer processes spawning unexpected child processes such as cmd.exe, powershell.exe, or shell interpreters on macOS and Linux
Outbound network connections from Chrome to untrusted infrastructure immediately after visiting an unfamiliar page
Unexpected file writes into user profile or temporary directories by Chrome renderer processes
Chrome crash reports referencing DevTools objects or heap corruption signatures

Detection Strategies

Inventory installed Chrome versions across endpoints and flag any build below 150.0.7871.47
Correlate browser process telemetry with EDR-recorded process trees to catch anomalous child processes from Chrome renderers
Monitor DNS and proxy logs for user traffic to newly registered or low-reputation domains preceding suspicious endpoint activity

Monitoring Recommendations

Enable Chrome enterprise reporting to centralize version, extension, and crash data
Alert on renderer process crashes accompanied by heap or UAF signatures in Windows Error Reporting or crashpad logs
Track execution of DevTools-related command-line flags such as --remote-debugging-port in enterprise environments where they are not expected

How to Mitigate CVE-2026-14091

Immediate Actions Required

Update Google Chrome to version 150.0.7871.47 or later on Windows, macOS, and Linux endpoints
Force a browser restart after the update to ensure the patched binary is loaded
Verify Chrome auto-update is enabled and unblocked by proxy or firewall policies
Audit Chromium-based derivatives such as Microsoft Edge and Brave for equivalent upstream patches

Patch Information

Google released the fix in the Stable channel update for desktop. See the Google Chrome Stable Update advisory for full release notes and rollout details. Enterprise administrators should push the update via Chrome Browser Cloud Management or their existing software distribution tooling.

Workarounds

Restrict browsing to trusted sites through web filtering until patches are deployed
Disable or restrict DevTools access via the DeveloperToolsAvailability enterprise policy on managed endpoints
Deploy Chrome policy to enforce Site Isolation and block untrusted extensions that could reach DevTools APIs

bash

# Configuration example - enforce Chrome policy on Windows via registry
reg add "HKLM\Software\Policies\Google\Chrome" /v DeveloperToolsAvailability /t REG_DWORD /d 2 /f
reg add "HKLM\Software\Policies\Google\Chrome" /v DefaultBrowserSettingEnabled /t REG_DWORD /d 1 /f