CVE-2026-14010 Overview
CVE-2026-14010 is an uninitialized memory use vulnerability in the Codecs component of Google Chrome on Windows. The flaw affects Chrome versions prior to 150.0.7871.47 and is classified under CWE-457 (Use of Uninitialized Variable). A remote attacker can craft a malicious HTML page that triggers the uninitialized read and returns fragments of process memory. Successful exploitation discloses potentially sensitive information from the renderer process, including data that could aid follow-on attacks such as sandbox escapes or address space layout inference. Chromium rates the security severity as Medium.
Critical Impact
Remote attackers can leak sensitive data from Chrome renderer process memory by luring a user to a crafted HTML page.
Affected Products
- Google Chrome on Windows prior to version 150.0.7871.47
- Microsoft Windows platforms running vulnerable Chrome builds
- Chromium-derived browsers that share the affected codec code path
Discovery Timeline
- 2026-06-30 - CVE-2026-14010 published to NVD
- 2026-07-01 - Last updated in NVD database
Technical Details for CVE-2026-14010
Vulnerability Analysis
The vulnerability resides in Chrome's codec handling logic on Windows. A code path in the media decoding pipeline reads a variable or buffer field before it has been initialized. When the browser processes a specially crafted media element embedded in an HTML page, the uninitialized bytes are propagated into observable state accessible from the renderer. This exposes residual data left in memory from prior allocations. The issue is tracked publicly as Chromium Issue #516924151 and resolved in the stable channel update announced in the Google Chrome Desktop Update.
Root Cause
The root cause is missing initialization of a memory region used by the Codecs subsystem before that region is read. Under CWE-457, such flaws let an attacker sample whatever previous allocation occupied the same memory. In a browser renderer, that memory can include pointers, decoded frame data, or fragments of other web origins processed in the same process.
Attack Vector
Exploitation is network-based and requires user interaction. The attacker hosts a crafted HTML page that references media content designed to trigger the uninitialized read in Chrome's codec parser. When the victim visits the page, the malicious content forces Chrome to process bytes through the vulnerable code path. The attacker then reads back the leaked memory via observable side effects such as decoded output, canvas readback, or scripted media APIs. No authentication is required and no local access is needed.
No verified public exploit code is available at the time of publication. Technical specifics remain restricted in the Chromium tracker pending broad user patch adoption.
Detection Methods for CVE-2026-14010
Indicators of Compromise
- Chrome browser instances on Windows reporting a version string below 150.0.7871.47 in telemetry or user-agent logs.
- Outbound requests from user endpoints to newly registered domains hosting HTML pages with unusual embedded media payloads.
- Renderer process crash dumps referencing codec modules following visits to untrusted sites.
Detection Strategies
- Inventory installed Chrome versions across the Windows fleet and flag any build older than 150.0.7871.47.
- Monitor web proxy and DNS logs for user navigation to suspicious pages delivering non-standard media content.
- Correlate browser crash telemetry with URL history to identify pages that consistently trigger codec faults.
Monitoring Recommendations
- Enable centralized Chrome update reporting through Chrome Browser Cloud Management or equivalent tooling.
- Ingest endpoint browser version data into your SIEM and alert on drift from the approved patched version.
- Track EPSS score updates for CVE-2026-14010, currently 0.302% at percentile 21.935, to detect changes in exploitation likelihood.
How to Mitigate CVE-2026-14010
Immediate Actions Required
- Update Google Chrome on all Windows endpoints to version 150.0.7871.47 or later.
- Enforce automatic Chrome updates via group policy to prevent regression to vulnerable builds.
- Restrict access to untrusted websites through web filtering while patch deployment is in progress.
Patch Information
Google released the fix in the stable channel update documented in the Google Chrome Desktop Update. Windows users must run Chrome 150.0.7871.47 or newer. Administrators managing Chrome through enterprise policy should verify the TargetVersionPrefix and update rollout settings to accelerate deployment.
Workarounds
- Deploy content filtering to block unknown or low-reputation domains that could host crafted HTML pages.
- Instruct users to avoid opening links from untrusted sources until patch deployment completes.
- Consider temporarily disabling media autoplay through Chrome enterprise policies to limit automatic codec parsing.
# Verify Chrome version on Windows endpoints
reg query "HKLM\SOFTWARE\Google\Update\Clients\{8A69D345-D564-463C-AFF1-A69D9E530F96}" /v pv
# Enforce minimum Chrome version via Group Policy registry key
reg add "HKLM\SOFTWARE\Policies\Google\Update" /v TargetVersionPrefix /t REG_SZ /d "150.0.7871.47" /f
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
