CVE-2026-13969: Google Chrome Information Disclosure Flaw

CVE-2026-13969 Overview

CVE-2026-13969 is an uninitialized memory use vulnerability in the User Interface (UI) component of Google Chrome on Android. The flaw affects Chrome versions prior to 150.0.7871.47 and is categorized under [CWE-457: Use of Uninitialized Variable]. A remote attacker who has already compromised the renderer process can leverage a crafted HTML page to read potentially sensitive information from process memory. Google's Chromium project rated the underlying issue as Medium severity. The vulnerability requires user interaction and does not directly enable code execution or tampering, but it can support broader exploit chains by leaking data useful for bypassing memory protections.

Critical Impact
Attackers with a compromised renderer can exfiltrate sensitive process memory contents from Chrome on Android, aiding follow-on exploitation such as sandbox escapes.

Affected Products

Google Chrome for Android prior to 150.0.7871.47
Google Android platform running vulnerable Chrome builds
Chromium-based components sharing the affected UI code paths

Discovery Timeline

2026-06-30 - CVE-2026-13969 published to NVD
2026-07-01 - Last updated in NVD database

Technical Details for CVE-2026-13969

Vulnerability Analysis

The vulnerability resides in Chrome's UI subsystem on Android, where a variable or memory region is used before being initialized. When the renderer process interacts with the affected UI code path via a specially crafted HTML page, uninitialized memory contents are exposed to attacker-controlled code running inside the compromised renderer.

The attack model assumes the renderer process is already compromised, typically through a separate vulnerability. This positions CVE-2026-13969 as a secondary primitive within an exploit chain rather than an initial access vector. The leaked memory can include pointers, heap metadata, or fragments of user data that assist in defeating Address Space Layout Randomization (ASLR).

The issue is tracked under [CWE-457: Use of Uninitialized Variable]. The Exploit Prediction Scoring System (EPSS) reports a probability of 0.271% for exploitation activity, and no public proof-of-concept is currently listed.

Root Cause

The root cause is a missing initialization step in a UI-related data structure or buffer. When the affected code path reads from this memory before a write has occurred, residual data from prior allocations is returned to the caller.

Attack Vector

Exploitation requires network-delivered content and user interaction, such as visiting a malicious website in a vulnerable Chrome build. The attacker must also control the renderer process. A crafted HTML page then triggers the vulnerable UI path, causing uninitialized memory to be surfaced to renderer-resident code for exfiltration.

No verified public exploit code is available for CVE-2026-13969. Technical details are tracked in the Chromium Issue Tracker Entry.

Detection Methods for CVE-2026-13969

Indicators of Compromise

Android devices running Chrome versions below 150.0.7871.47 while browsing untrusted sites.
Renderer process crashes or anomalous memory access patterns correlated with visits to unknown domains.
Outbound traffic from mobile browsers containing binary blobs resembling heap fragments or pointer values.

Detection Strategies

Inventory mobile endpoints and enumerate installed Chrome versions to flag builds prior to 150.0.7871.47.
Correlate browser telemetry with threat intelligence feeds to identify visits to domains hosting Chromium exploit chains.
Inspect mobile device management (MDM) reports for outdated Chrome installations that miss the June 2026 Stable channel update.

Monitoring Recommendations

Monitor Chrome update posture on managed Android devices continuously.
Alert on renderer crash reports from Android Chrome that spike above baseline.
Track network egress from mobile browsers for unexpected data flows to newly registered domains.

How to Mitigate CVE-2026-13969

Immediate Actions Required

Update Google Chrome on Android to version 150.0.7871.47 or later on all managed devices.
Enforce automatic Chrome updates through Google Play and MDM policies to eliminate lagging installations.
Review any deployed Chromium-based browsers or WebView components for equivalent patches.

Patch Information

Google addressed CVE-2026-13969 in the Chrome Stable channel update announced in the Google Chrome Desktop Update release notes. Users must install Chrome 150.0.7871.47 or later. Details for the underlying defect are tracked in the Chromium Issue Tracker Entry.

Workarounds

Restrict browsing to trusted sites until the Chrome update reaches all Android endpoints.
Disable or limit JavaScript execution on untrusted origins via enterprise browser policy where feasible.
Use MDM configuration to force-close and update Chrome installations flagged as out of date.

bash

# Configuration example: query installed Chrome version via ADB
adb shell dumpsys package com.android.chrome | grep versionName