Security readout for executives and security teams
Plain-English summary
A flaw in Microsoft Edge for Android can misrepresent security-critical interface information, potentially convincing users that deceptive content is trustworthy. Successful abuse could expose sensitive information and allow limited content manipulation. The issue is remotely reachable but rated medium because exploitation is considered difficult.
Executive priority
Treat this as a normal-priority security update with accelerated handling for high-value mobile users. It is not supported as an emergency exploitation event, but the potential for sensitive-data exposure warrants timely inventory, vendor-version verification, and deployment through mobile application management.
Technical view
CVE-2026-0391 is a CWE-451 UI misrepresentation vulnerability in Chromium-based Microsoft Edge for Android. Its CVSS 3.1 score is 6.5: network-accessible, high complexity, no privileges or user interaction required, with high confidentiality and low integrity impact but no availability impact.
Likely exposure
Exposure applies to organizations using Microsoft Edge on Android. The bundle lists version 1.0.0.0, but does not establish whether that represents the complete affected range. Asset owners should verify installed versions against Microsoft’s advisory rather than infer safety from this limited version entry.
Exploitation context
The supplied record does not report active exploitation, and the CVE is not identified as CISA KEV. CVSS records exploit maturity as unproven. Exploitation nevertheless requires network access and could produce credible interface spoofing; high attack complexity reduces, but does not eliminate, practical risk.
Researcher notes
The record supports UI spoofing and the stated CVSS impacts, but provides no attack scenario, affected-range detail beyond version 1.0.0.0, or fixed-version identifier in the supplied bundle. Researchers should consult Microsoft’s advisory for release specifics and avoid assuming the listed version is exhaustive.
Mitigation direction
- Review Microsoft’s advisory for the applicable corrected Edge for Android release.
- Update managed Android devices through approved application-management channels.
- Prioritize devices used for privileged, financial, or sensitive web activity.
- Until updated, discourage sensitive decisions based solely on browser-displayed identity indicators.
Validation and detection
- Inventory Android devices running Microsoft Edge and record their installed versions.
- Compare installed versions with the affected and corrected versions in Microsoft’s advisory.
- Confirm updates reached managed devices and that automatic application updates remain enabled.
- Monitor security reports for suspicious browser-interface spoofing or unexpected credential exposure.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-451: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2026-0391 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 6.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N/E:U/RL:O/RC:C
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
SSVC decision data
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N/E:U/RL:O/RC:C2.24.2microsoftVulnerability scoring details
Base CVSS 3.1 score
6.5MediumVector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N/E:U/RL:O/RC:C
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- Microsoft Edge (Chromium-based) for Android Spoofing VulnerabilityCVE reference, microsoft · vendor-advisory, patch
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
User Interface (UI) Misrepresentation of Critical Information
User Interface (UI) Misrepresentation of Critical Information represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.