CVE-2026-14090: Google Chrome Buffer Overflow Vulnerability

CVE-2026-14090 Overview

CVE-2026-14090 affects the CameraCapture component in Google Chrome on ChromeOS prior to version 150.0.7871.47. The vulnerability stems from insufficient validation of untrusted input, which allows a remote attacker to trigger an out-of-bounds memory read through a crafted HTML page. The flaw is classified under [CWE-125] (Out-of-bounds Read) and carries a CVSS 3.1 base score of 8.1. Chromium's internal severity rating for this issue is Low, but the NVD assessment places it in the HIGH range due to network reachability and confidentiality impact. Exploitation requires user interaction, typically visiting an attacker-controlled page.

Critical Impact
Remote attackers can read out-of-bounds memory from the browser process on ChromeOS devices running Chrome versions earlier than 150.0.7871.47, potentially exposing sensitive in-process data.

Affected Products

Google Chrome on ChromeOS prior to 150.0.7871.47
Google ChromeOS (all channels shipping Chrome before 150.0.7871.47)
Chromium CameraCapture component

Discovery Timeline

2026-06-30 - CVE-2026-14090 published to the National Vulnerability Database
2026-07-02 - Last updated in NVD database

Technical Details for CVE-2026-14090

Vulnerability Analysis

The vulnerability resides in the CameraCapture implementation used by Google Chrome on ChromeOS. CameraCapture handles camera stream acquisition exposed to web content through the getUserMedia and related MediaStream APIs. Insufficient validation of untrusted input allows a crafted HTML page to steer the code into reading memory beyond an allocated buffer.

An out-of-bounds read in this context can disclose adjacent process memory to attacker-controlled JavaScript. Depending on heap layout, disclosed bytes may include pointers, tokens, or cross-origin data resident in the renderer or associated capture process. This class of primitive is frequently chained with additional bugs to defeat address space layout randomization (ASLR) or stage a sandbox escape.

User interaction is required. A victim must load or navigate to a malicious page, but no authentication or prior access is needed. The attack is delivered over the network and executes with the privileges of the browser process handling the crafted page.

Root Cause

The root cause is missing or incomplete bounds checking on untrusted input processed by CameraCapture. Data supplied through the web-exposed capture interface reaches parsing or copy logic without adequate size or index validation, permitting reads past the intended buffer boundary. This maps directly to [CWE-125].

Attack Vector

Exploitation is remote over the network. An attacker hosts a crafted HTML page that invokes the vulnerable CameraCapture code paths from JavaScript. When a ChromeOS user with a vulnerable Chrome build visits the page, the out-of-bounds read is triggered and the leaked bytes can be exfiltrated back to attacker infrastructure through standard web channels. No verified proof-of-concept or public exploit is currently listed in Exploit-DB, and the vulnerability is not present in the CISA KEV catalog. The EPSS probability is 0.284% as of 2026-07-02.

// No verified proof-of-concept code is available for CVE-2026-14090.
// The vulnerability is triggered by JavaScript on a crafted HTML page that
// exercises the CameraCapture code path with malformed input, causing an
// out-of-bounds read. See the Chromium Issue Tracker entry for details.

Detection Methods for CVE-2026-14090

Indicators of Compromise

Chrome browser processes on ChromeOS reporting version strings below 150.0.7871.47 in inventory or telemetry
Browser navigation events to unfamiliar domains immediately followed by outbound POSTs containing base64-encoded binary blobs
Repeated renderer or GPU process crashes correlated with pages invoking getUserMedia or MediaStream APIs

Detection Strategies

Inventory installed Chrome versions across the ChromeOS fleet and flag any device below 150.0.7871.47
Correlate web proxy logs with threat intelligence feeds to identify access to pages hosting known exploit primitives against Chromium
Monitor chrome://crash submissions and endpoint crash telemetry for anomalies in camera or media capture components

Monitoring Recommendations

Ingest Chrome update and version telemetry into a central SIEM or data lake for continuous compliance checks
Alert on ChromeOS devices that fail to auto-update within the vendor's stable channel release window
Track outbound traffic patterns from browser processes for volumetric anomalies consistent with memory disclosure exfiltration

How to Mitigate CVE-2026-14090

Immediate Actions Required

Update Google Chrome on ChromeOS to version 150.0.7871.47 or later on all managed devices
Verify auto-update policies are enabled and unblocked by network egress rules on ChromeOS endpoints
Restrict user access to untrusted sites through enterprise URL filtering until patch deployment is confirmed

Patch Information

Google addressed CVE-2026-14090 in the Chrome stable channel update referenced in the Google Chrome Desktop Update advisory. Technical tracking is available in the Chromium Issue Tracker Entry. Administrators should confirm devices report a Chrome version of 150.0.7871.47 or higher after the update cycle.

Workarounds

Deny camera and MediaStream permissions by policy for untrusted origins using ChromeOS enterprise policies such as VideoCaptureAllowed and DefaultMediaStreamSetting
Enforce Site Isolation and strict SameSite cookie policies to limit the value of leaked memory contents
Direct users to avoid opening unsolicited links on ChromeOS devices until updates are confirmed installed

bash

# Verify Chrome version on a ChromeOS device (crosh or Linux container)
google-chrome --version

# Expected output should be 150.0.7871.47 or later, for example:
# Google Chrome 150.0.7871.47

# Force policy refresh after pushing updated ChromeOS admin policies
restart ui