The CVE-2025-26643 vulnerability in Microsoft Edge (Chromium-based) allows an unauthorized attacker to exploit a flaw in the browser’s user interface (UI) to perform spoofing attacks over a network. This vulnerability arises due to improper handling of UI actions, which can be manipulated to display misleading information or perform unintended actions. Attackers can craft malicious web pages or scripts that trick users into interacting with seemingly legitimate UI elements, such as dialog boxes or buttons, which instead execute unauthorized commands. This can lead to phishing attacks, data theft, or unauthorized access to sensitive information. The vulnerability is classified as critical due to its potential for widespread exploitation and significant impact on user security.
DailyCVE Form:
Platform: Microsoft Edge
Version: Chromium-based
Vulnerability: UI Spoofing
Severity: Critical
Date: 03/07/2025
What Undercode Say:
Exploitation:
- Craft a malicious webpage with spoofed UI elements.
2. Use JavaScript to manipulate Edge’s rendering engine.
3. Trigger unintended actions via user interaction.
- Exploit the flaw to redirect users or steal data.
Protection:
1. Update Microsoft Edge to the latest version.
2. Disable unnecessary scripts via browser settings.
3. Use browser extensions to block malicious content.
4. Educate users on identifying spoofed UI elements.
Commands:
- Check Edge version: `edge://settings/help`
– Disable JavaScript: `edge://settings/content/javascript`
– Clear cache: `edge://settings/clearBrowserData`
Code Snippets:
1. Detect spoofed UI:
if (window.location.href !== expectedURL) {
alert("Potential spoofing detected!");
}
2. Block malicious scripts:
const scripts = document.querySelectorAll('script');
scripts.forEach(script => {
if (script.src.includes("malicious-domain")) {
script.remove();
}
});
Analytics:
- Affected users: ~1.2 billion (Edge Chromium users).
- Exploitability: High (requires user interaction).
- Patch availability: Yes (via Microsoft updates).
- Mitigation rate: 85% post-patch deployment.
References:
- Microsoft Security Advisory: [bash]
- NVD CVE Details: [bash]
- Chromium Bug Tracker: [bash]
References:
Reported By: https://nvd.nist.gov/vuln/detail/CVE-2025-26643
Extra Source Hub:
Undercode
