CVE-2024-29057: Microsoft Edge Spoofing Vulnerability

CVE-2024-29057 Overview

CVE-2024-29057 is a spoofing vulnerability affecting Microsoft Edge (Chromium-based). The flaw is classified under [CWE-357] Insufficient UI Warning of Dangerous Operations. An attacker can craft content that misleads the user interface, causing the browser to present misleading or falsified information to the user. Exploitation requires user interaction and can be initiated over the network without prior authentication. Successful exploitation impacts integrity by allowing attackers to convince users that spoofed content originates from a legitimate source. Microsoft published guidance through the Security Update Guide and shipped a fixed build of Edge.

Critical Impact
An attacker who successfully exploits CVE-2024-29057 can spoof browser-rendered content and deceive users into trusting attacker-controlled data as if it came from a legitimate origin.

Affected Products

Microsoft Edge (Chromium-based) versions prior to the March 2024 security update
Windows desktop installations of Microsoft Edge
macOS and Linux distributions of Microsoft Edge

Discovery Timeline

2024-03-22 - CVE-2024-29057 published to the National Vulnerability Database
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2024-29057

Vulnerability Analysis

The vulnerability is a spoofing weakness in Microsoft Edge's Chromium-based rendering and UI layer. The browser fails to sufficiently warn users about dangerous operations, which maps to [CWE-357]. This gap allows attacker-controlled content to appear associated with trusted origins, addresses, or UI elements. Exploitation is limited to integrity impact; confidentiality and availability are not directly affected. The attack complexity is low, and no privileges are required, but the victim must interact with a crafted page or link. As a result, this class of flaw commonly enables phishing, credential harvesting, and social-engineering campaigns that leverage the visual trust users place in the browser chrome or rendered content.

Root Cause

Microsoft categorizes the underlying weakness as Insufficient UI Warning of Dangerous Operations. The browser does not consistently signal when rendered content or UI elements could mislead the user. This creates a mismatch between what the user perceives and the actual origin or nature of the content being displayed.

Attack Vector

An attacker hosts a crafted web page or delivers a malicious link through email, chat, or an ad. When the victim visits the page and interacts with the affected UI, Edge renders content in a way that spoofs a trusted source. The attacker leverages this to influence user decisions such as entering credentials, downloading files, or approving actions.

No verified proof-of-concept code is publicly available for CVE-2024-29057. Refer to the Microsoft Security Update Guide CVE-2024-29057 for authoritative technical details.

Detection Methods for CVE-2024-29057

Indicators of Compromise

Microsoft Edge process (msedge.exe) navigating to domains that mimic legitimate brands, banks, or Microsoft services
User reports of browser content that appears to originate from a trusted site but leads to unexpected download or credential prompts
Outbound HTTP/HTTPS requests to newly registered or low-reputation domains immediately following an email or chat link click

Detection Strategies

Inspect Edge version telemetry across the fleet and flag endpoints running builds released before the March 2024 Edge security update
Correlate email or messaging link clicks with subsequent Edge navigation events to identify social-engineering delivery chains
Monitor for anomalous credential submissions from Edge to non-corporate domains using web proxy or SASE logs

Monitoring Recommendations

Ingest Edge browser telemetry and endpoint process events into the SIEM for correlation with phishing indicators
Alert on Edge child processes spawning powershell.exe, cmd.exe, or script interpreters shortly after browsing sessions
Track domain reputation and TLS certificate anomalies for sites accessed through Edge sessions initiated from external links

How to Mitigate CVE-2024-29057

Immediate Actions Required

Update Microsoft Edge to the version listed in the Microsoft Security Update Guide CVE-2024-29057 advisory
Verify that automatic updates for Edge are enabled through group policy or Microsoft Intune
Deliver targeted phishing awareness training that highlights spoofed browser content and address bar deception

Patch Information

Microsoft addressed CVE-2024-29057 through a Chromium-based Edge update distributed via the Edge update channel. Administrators should confirm patch deployment using the version reported in edge://settings/help and cross-reference it against the fixed build documented in the Microsoft advisory.

Workarounds

Enforce SmartScreen filtering and enhanced phishing protection through Edge policy configuration
Restrict user access to unknown or low-reputation domains using web proxy or DNS filtering controls
Require multifactor authentication on all corporate identity providers to reduce the impact of credential theft resulting from spoofed pages

bash

# Force Microsoft Edge to auto-update via Group Policy on Windows
# Registry key controlled by the Microsoft Edge Update ADMX template
reg add "HKLM\SOFTWARE\Policies\Microsoft\EdgeUpdate" /v UpdateDefault /t REG_DWORD /d 1 /f
reg add "HKLM\SOFTWARE\Policies\Microsoft\EdgeUpdate" /v AutoUpdateCheckPeriodMinutes /t REG_DWORD /d 60 /f

# Verify installed Edge version
"%ProgramFiles(x86)%\Microsoft\Edge\Application\msedge.exe" --version