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Microsoft Edge for Android UI Misrepresentation Spoofing Vulnerability

IdentifiersCVE-2026-0391CWE-451· User Interface (UI)…

CVE-2026-0391 is a spoofing vulnerability in Microsoft Edge (Chromium-based) for Android. The issue is described as a user interface misrepresentation of critical information, where the browser can present security-relevant or otherwise critical UI information in a misleading way. Microsoft characterizes the flaw as allowing an unauthorized attacker to perform spoofing over a network. Based on the available information, the vulnerability affects the Android version of Edge and does not include public technical details about a specific vulnerable function or code path. The core weakness is the incorrect or misleading presentation of trusted UI elements or critical information to the user, which can enable attacker-controlled content or network-delivered interactions to impersonate legitimate states, origins, or security indicators.

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ANALYST BRIEF

Impact, mitigation & remediation

What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.

Impact

What an attacker gets, and what they’ve been doing with it.

Successful exploitation allows a remote, unauthorized attacker to spoof trusted information in the Edge for Android user interface. This can mislead users about the authenticity, origin, or security state of content they are viewing, increasing the likelihood of phishing, credential theft, fraudulent user actions, or other social-engineering-driven compromise. The available content does not indicate direct code execution or privilege escalation; the primary impact is deception of the user through falsified or misrepresented browser UI context.

Mitigation

If you can’t patch tonight, do this now.

If immediate patching is not possible, reduce exposure by limiting use of Microsoft Edge for Android on untrusted networks and for high-risk authentication workflows until the update is applied. Users should be instructed to verify sensitive actions through out-of-band means and to be cautious of browser UI elements that indicate identity, origin, or security status. No vendor-specific workaround or mitigation is provided in the supplied content.

Remediation

Patch, then assume compromise.

Apply Microsoft's security update for Microsoft Edge for Android that addresses CVE-2026-0391. Organizations should ensure affected Android devices are updated to the latest available Edge release containing the fix. Because the provided content does not specify an exact fixed version, that information is currently not available in the supplied material.
PUBLIC EXPLOITS

Exploits

No public exploits tracked yet. Mallory keeps watching.

VALID 0 / 0 TOTALView more in app

No public exploit code observed for this vulnerability.

EXPOSURE SURFACE

Affected products & vendors

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VendorProductType
Microsoft CorporationEdgeapplication
Microsoft CorporationEdge Chromiumapplication

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What this page doesn’t show

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Exposure mapping

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Threat actor evidence

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Associated malware

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Detection signatures

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Vendor-by-vendor mapping

Cross-references every affected SKU, including bundled OEM variants.

Social activity7

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