CVE-2024-38208: Microsoft Edge for Android XSS Vulnerability

CVE-2024-38208 Overview

CVE-2024-38208 is a spoofing vulnerability in Microsoft Edge for Android. The flaw allows an attacker to present misleading content to users through the browser interface. Exploitation requires user interaction, typically clicking a crafted link or visiting a malicious page.

Microsoft classifies this issue under the Cross-site Scripting weakness category [CWE-79]. The vulnerability affects the confidentiality and integrity of browser-rendered content but does not directly impact availability. Successful spoofing can enable credential theft, phishing, or downstream social engineering attacks against mobile users.

Critical Impact
Attackers can spoof browser UI or web content on Microsoft Edge for Android to deceive users into disclosing credentials or trusting malicious pages.

Affected Products

Microsoft Edge (Chromium-based) for Android
Google Android platform hosting the vulnerable Edge build
Enterprise mobile deployments using Edge as the default browser

Discovery Timeline

2024-08-22 - CVE-2024-38208 published to the National Vulnerability Database
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2024-38208

Vulnerability Analysis

The vulnerability resides in how Microsoft Edge for Android renders or handles specific web content on mobile devices. An attacker crafts a page or URL that causes the browser to display attacker-controlled content in a context users trust. The flaw maps to [CWE-79], indicating improper neutralization of input during web page generation.

Exploitation is network-based and requires the victim to interact with attacker content. The scope change component means the vulnerable component impacts resources beyond its own security boundary. Both confidentiality and integrity are affected at a limited level, consistent with a UI or content spoofing outcome rather than code execution.

Mobile browsers are particularly susceptible to spoofing because limited screen real estate hides URL bars, certificate indicators, and origin markers. Attackers frequently combine spoofing flaws with phishing kits targeting banking, email, and enterprise SSO portals.

Root Cause

Microsoft has not published detailed root-cause analysis beyond the CWE-79 classification. The weakness pattern suggests insufficient sanitization or improper rendering of untrusted content that appears in trusted UI zones or overlaps origin indicators shown to the user.

Attack Vector

An attacker delivers a malicious URL through email, SMS, chat, or an embedded link on a compromised site. When the victim opens the link in Microsoft Edge for Android, the crafted content renders in a way that misrepresents its origin or context. The user is then induced to enter credentials, approve a permission, or download attacker-supplied content believing it originates from a legitimate site.

No authentication or elevated privileges are required to stage the attack. The only prerequisite is user interaction with the crafted content.

No public proof-of-concept code is available for this vulnerability. Refer to the Microsoft Security Update CVE-2024-38208 advisory for vendor guidance.

Detection Methods for CVE-2024-38208

Indicators of Compromise

User reports of Microsoft Edge for Android displaying pages whose visible URL or content does not match the expected destination
Mobile device telemetry showing Edge navigations to typosquat, homograph, or newly registered domains preceding credential submissions
Phishing landing pages served with content designed to overlay or imitate Edge address-bar indicators

Detection Strategies

Ingest mobile browser navigation logs from mobile device management (MDM) or endpoint agents and correlate against threat intelligence feeds for known phishing infrastructure
Alert on outbound requests from Android devices to domains impersonating internal SSO, Microsoft 365, or banking portals
Review email and SMS gateways for URL patterns that historically abuse browser spoofing weaknesses

Monitoring Recommendations

Track Microsoft Edge for Android version distribution across managed devices and flag installations below the patched build
Monitor authentication logs for anomalous logins that follow shortly after user clicks on external mobile links
Enable browser telemetry sharing with the SOC where organizational policy permits

How to Mitigate CVE-2024-38208

Immediate Actions Required

Update Microsoft Edge for Android to the latest version available through the Google Play Store
Push the update through mobile device management for enrolled devices and verify installation completion
Communicate mobile phishing awareness guidance to users, emphasizing URL verification on small screens

Patch Information

Microsoft addressed CVE-2024-38208 through updates delivered via the Google Play Store. Full remediation details are available in the Microsoft Security Update CVE-2024-38208 advisory. Administrators should confirm managed Android devices have received the fixed Edge build.

Workarounds

Restrict opening untrusted links in Microsoft Edge for Android until the patched version is installed
Configure MDM policies to enforce automatic updates for Microsoft Edge and other browsers on managed Android devices
Deploy mobile threat defense tooling that blocks known phishing domains at the network or DNS layer

bash

# Verify installed Microsoft Edge version on an Android device via ADB
adb shell dumpsys package com.microsoft.emmx | grep versionName