CVE-2025-0447: Google Chrome Privilege Escalation Flaw

CVE-2025-0447 Overview

CVE-2025-0447 is a privilege escalation vulnerability affecting Google Chrome versions prior to 132.0.6834.83. The flaw resides in the Navigation component and stems from an inappropriate implementation that a remote attacker can abuse through a crafted HTML page. Successful exploitation requires user interaction, such as visiting a malicious website. Google addressed the issue in the Stable channel update released on January 14, 2025. The vulnerability is mapped to CWE-79, reflecting improper neutralization of input during web page generation.

Critical Impact
A remote attacker can achieve privilege escalation within the browser context by luring a user to a crafted HTML page, potentially breaking the same-origin model and gaining access to sensitive cross-origin content.

Affected Products

Google Chrome Desktop versions prior to 132.0.6834.83
Chromium-based browsers that have not integrated the upstream Navigation fix
All supported desktop platforms (Windows, macOS, Linux) shipping the affected Chrome build

Discovery Timeline

2025-01-14 - Google releases Chrome 132.0.6834.83 containing the fix
2025-01-15 - CVE-2025-0447 published to the National Vulnerability Database (NVD)
2025-04-21 - Last updated in the NVD database

Technical Details for CVE-2025-0447

Vulnerability Analysis

The vulnerability is an inappropriate implementation defect in Chrome's Navigation component. Navigation logic governs how the browser commits page loads, enforces origin isolation, and applies security context decisions during top-level and subframe transitions. Errors in this layer can blur trust boundaries between origins.

The weakness is classified under CWE-79, Cross-Site Scripting. In a navigation context, this typically means an attacker-controlled document can influence how the browser renders or attributes content, enabling script execution under a more privileged origin than intended. Chromium engineers rated the security severity as Low internally, while the NVD-assigned base score reflects higher confidentiality, integrity, and availability impact when user interaction occurs.

Root Cause

The root cause lies in how Chrome's Navigation stack handled specific navigation transitions before version 132.0.6834.83. A crafted HTML page can manipulate the navigation flow so that script or content ends up attributed to a different security principal, breaking the same-origin policy. Chromium's issue tracker entry 375550814 tracks the underlying defect.

Attack Vector

Exploitation is network-based and requires user interaction. An attacker hosts a crafted HTML page and convinces the target to load it through phishing, malvertising, or a compromised site. Once rendered, the page abuses the Navigation flaw to escalate privileges in the browser, gaining script context over content that should remain isolated. No authentication is required, and the attack scope remains within the renderer's origin model. Public proof-of-concept code is not available, and the issue is not listed in the CISA Known Exploited Vulnerabilities catalog. The EPSS probability is 0.859% at the 75th percentile.

No verified exploit code is publicly available. Refer to the Chromium Issue Tracker Entry and the Google Chrome Desktop Update for additional technical context.

Detection Methods for CVE-2025-0447

Indicators of Compromise

Chrome client telemetry reporting browser versions earlier than 132.0.6834.83 on managed endpoints
User reports of unexpected navigation behavior, popups, or origin spoofing after visiting unfamiliar links
Web proxy or DNS logs showing access to newly registered or low-reputation domains delivering HTML payloads to outdated Chrome clients

Detection Strategies

Inventory installed Chrome versions across the fleet and flag any host running a build below 132.0.6834.83
Inspect HTTP responses for suspicious navigation primitives such as repeated window.open, location.replace, or history.pushState calls targeting cross-origin contexts
Correlate browser process behavior with outbound requests to attacker-controlled infrastructure following user clicks on email or chat links

Monitoring Recommendations

Forward browser version inventory and URL telemetry to a centralized analytics platform for continuous version drift monitoring
Enable enterprise reporting through Chrome Browser Cloud Management to receive update status and crash events
Alert on endpoints that fail to upgrade Chrome within the organization's defined patch SLA after January 14, 2025

How to Mitigate CVE-2025-0447

Immediate Actions Required

Update Google Chrome to version 132.0.6834.83 or later on all Windows, macOS, and Linux endpoints
Restart Chrome after the update completes so the patched binary is loaded into memory
Apply equivalent updates to Chromium-based browsers (Edge, Brave, Opera, Vivaldi) once vendors ship the upstream fix

Patch Information

Google released the Stable channel update on January 14, 2025, shipping Chrome 132.0.6834.83/.84 for desktop platforms. The fix is described in the Google Chrome Desktop Update advisory and tracked in Chromium Issue 375550814. Patched versions correct the Navigation component's handling of the affected transitions and restore proper origin attribution.

Workarounds

Restrict browsing to trusted sites using enterprise URL allowlists until the patch is deployed
Disable or limit execution of untrusted JavaScript through enterprise policies such as DefaultJavaScriptSetting
Train users to avoid clicking unsolicited links and to report unexpected browser behavior to the security team

bash

# Verify Chrome version on Linux endpoints
google-chrome --version

# Force update check via Chrome policy on managed Windows hosts (PowerShell)
Reg Add "HKLM\Software\Policies\Google\Update" /v UpdateDefault /t REG_DWORD /d 1 /f
Reg Add "HKLM\Software\Policies\Google\Update" /v AutoUpdateCheckPeriodMinutes /t REG_DWORD /d 60 /f