CVE-2025-47964 Overview
CVE-2025-47964 is a spoofing vulnerability affecting Microsoft Edge (Chromium-based). The flaw is categorized under [CWE-451], User Interface (UI) Misrepresentation of Critical Information. An attacker can craft web content that misrepresents security-relevant UI elements, potentially deceiving users into trusting malicious pages or content. Exploitation requires user interaction over the network and does not require authentication. The impact is limited to integrity, with no direct effect on confidentiality or availability. Microsoft has published a security update addressing the issue through the Microsoft Security Response Center.
Critical Impact
Attackers can spoof browser UI elements to trick users into acting on falsified content, enabling phishing and social engineering attacks that appear to originate from trusted sources.
Affected Products
- Microsoft Edge (Chromium-based)
- Windows installations running vulnerable Edge builds
- macOS and Linux installations running vulnerable Edge builds
Discovery Timeline
- 2025-07-11 - CVE-2025-47964 published to NVD
- 2026-06-17 - Last updated in NVD database
Technical Details for CVE-2025-47964
Vulnerability Analysis
CVE-2025-47964 is a UI spoofing vulnerability in the Chromium-based Microsoft Edge browser. The classification under [CWE-451] indicates the browser fails to accurately convey security-critical information in its user interface. Attackers can craft pages, URLs, or content that visually impersonate trusted sources, such as legitimate domains, security indicators, or origin markers.
The attack surface is network-facing, with victims reached through malicious links, embedded content, or compromised sites. The vulnerability alone does not grant code execution or data theft, but it operates as a primary enabler for downstream phishing, credential harvesting, and social engineering campaigns. Its low complexity and lack of privilege requirement make it practical to weaponize against broad user populations.
Root Cause
The root cause lies in how Microsoft Edge renders or presents security-relevant UI context. Improper handling allows attacker-controlled content to overlap, obscure, or replicate trust indicators presented to the user. Microsoft's advisory documents the fix but does not publicly detail the specific rendering component involved.
Attack Vector
An attacker hosts or delivers crafted web content that renders deceptive UI when opened in a vulnerable Edge build. The victim must interact with the malicious page, typically by clicking a link from email, chat, or a compromised site. Once loaded, the spoofed interface can misrepresent the origin, security state, or content authenticity, driving the user toward actions such as entering credentials or downloading attacker-controlled files.
No verified public exploit code is available for CVE-2025-47964, and the flaw is not listed in the CISA Known Exploited Vulnerabilities catalog. See the Microsoft Security Update CVE-2025-47964 advisory for vendor guidance.
Detection Methods for CVE-2025-47964
Indicators of Compromise
- Unexpected outbound connections from Edge to newly registered or low-reputation domains following a user click on an external link.
- User reports of address bar, padlock, or origin indicators that appear inconsistent with the site content being displayed.
- Credential submission events to domains that visually resemble legitimate corporate or SaaS login pages.
Detection Strategies
- Monitor Edge browser version telemetry across managed endpoints and flag hosts still running builds released before the CVE-2025-47964 patch.
- Correlate URL categorization telemetry with user click-through events to surface phishing pages leveraging UI spoofing.
- Inspect proxy or DNS logs for lookalike domains, homoglyph patterns, and subdomains impersonating internal or high-value services.
Monitoring Recommendations
- Enable browser process telemetry through EDR to correlate rendering activity with subsequent credential entry or file download events.
- Track user-reported phishing submissions and pivot on referring URL, landing page, and Edge build version.
- Alert on Edge instances where SmartScreen or equivalent phishing protections are disabled or bypassed.
How to Mitigate CVE-2025-47964
Immediate Actions Required
- Deploy the Microsoft Edge update referenced in the Microsoft Security Update CVE-2025-47964 advisory across all managed endpoints.
- Enforce automatic Edge updates through group policy or Intune configuration profiles to close the patch window quickly.
- Confirm Microsoft Defender SmartScreen is enabled to filter known phishing and malicious URLs.
Patch Information
Microsoft has released a security update for the Chromium-based Edge browser. Administrators should reference the Microsoft Security Update CVE-2025-47964 advisory for the fixed build number applicable to their channel and deploy the corresponding update through Microsoft Update, WSUS, Intune, or the Edge admin channel.
Workarounds
- Restrict Edge to enterprise-approved sites through URL allowlisting where operationally feasible until patching completes.
- Deliver targeted user awareness communications warning about phishing pages that impersonate internal login portals.
- Require phishing-resistant multi-factor authentication for sensitive applications to reduce the impact of successful credential spoofing.
# Verify installed Microsoft Edge version on Windows endpoints
(Get-Item "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe").VersionInfo.ProductVersion
# Force update check via Edge management command line
start microsoft-edge:"edge://settings/help"
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
