{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "User interface (ui) misrepresentation of critical information in Microsoft Edge for Android allows an unauthorized attacker to perform spoofing over a network."
    }
  ],
  "id": "CVE-2026-0391",
  "lastModified": "2026-02-06T15:14:47.703",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.2,
        "impactScore": 4.2,
        "source": "secure@microsoft.com",
        "type": "Primary"
      }
    ]
  },
  "published": "2026-02-05T23:15:54.093",
  "references": [
    {
      "source": "secure@microsoft.com",
      "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-0391"
    }
  ],
  "sourceIdentifier": "secure@microsoft.com",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-451"
        }
      ],
      "source": "secure@microsoft.com",
      "type": "Primary"
    }
  ]
}

{
  "document": {
    "acknowledgments": [
      {
        "names": [
          "xyzhellsing"
        ]
      }
    ],
    "aggregate_severity": {
      "namespace": "https://www.microsoft.com/en-us/msrc/security-update-severity-rating-system",
      "text": "Moderate"
    },
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "text": "Public",
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "en-US",
    "notes": [
      {
        "category": "general",
        "text": "To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle",
        "title": "Additional Resources"
      },
      {
        "category": "legal_disclaimer",
        "text": "The information provided in the Microsoft Knowledge Base is provided \\\"as is\\\" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.",
        "title": "Disclaimer"
      },
      {
        "category": "general",
        "text": "Required. The vulnerability documented by this CVE requires customer action to resolve.",
        "title": "Customer Action"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "secure@microsoft.com",
      "name": "Microsoft Security Response Center",
      "namespace": "https://msrc.microsoft.com"
    },
    "references": [
      {
        "category": "self",
        "summary": "CVE-2026-0391 Microsoft Edge (Chromium-based) for Android Spoofing Vulnerability - HTML",
        "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-0391"
      },
      {
        "category": "self",
        "summary": "CVE-2026-0391 Microsoft Edge (Chromium-based) for Android Spoofing Vulnerability - CSAF",
        "url": "https://msrc.microsoft.com/csaf/advisories/2026/msrc_cve-2026-0391.json"
      },
      {
        "category": "external",
        "summary": "Microsoft Exploitability Index",
        "url": "https://www.microsoft.com/en-us/msrc/exploitability-index?rtc=1"
      },
      {
        "category": "external",
        "summary": "Microsoft Support Lifecycle",
        "url": "https://support.microsoft.com/lifecycle"
      },
      {
        "category": "external",
        "summary": "Common Vulnerability Scoring System",
        "url": "https://www.first.org/cvss"
      }
    ],
    "title": "Microsoft Edge (Chromium-based) for Android Spoofing Vulnerability",
    "tracking": {
      "current_release_date": "2026-02-05T08:00:00.000Z",
      "generator": {
        "date": "2026-02-05T22:44:26.889Z",
        "engine": {
          "name": "MSRC Generator",
          "version": "1.0"
        }
      },
      "id": "msrc_CVE-2026-0391",
      "initial_release_date": "2026-02-05T08:00:00.000Z",
      "revision_history": [
        {
          "date": "2026-02-05T08:00:00.000Z",
          "legacy_version": "1",
          "number": "1",
          "summary": "Information published."
        }
      ],
      "status": "final",
      "version": "1"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "category": "product_version_range",
            "name": "\u003c143.0.3650.66",
            "product": {
              "name": "Microsoft Edge (Chromium-based) \u003c143.0.3650.66",
              "product_id": "1"
            }
          },
          {
            "category": "product_version",
            "name": "143.0.3650.66",
            "product": {
              "name": "Microsoft Edge (Chromium-based) 143.0.3650.66",
              "product_id": "11655"
            }
          }
        ],
        "category": "product_name",
        "name": "Microsoft Edge (Chromium-based)"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-0391",
      "cwe": {
        "id": "CWE-451",
        "name": "User Interface (UI) Misrepresentation of Critical Information"
      },
      "notes": [
        {
          "category": "general",
          "text": "Microsoft",
          "title": "Assigning CNA"
        },
        {
          "category": "faq",
          "text": "The attacker must correctly craft convincing spoofed UI chrome, time the fullscreen entry, and rely on user perception. While the exploit triggers reliably after a gesture, successful deception depends on careful social engineering and realistic mimicking of browser UI.",
          "title": "According to the CVSS metric, the attack complexity is high (AC:H). What does that mean for this vulnerability?"
        },
        {
          "category": "faq",
          "text": "An attacker who successfully exploited this vulnerability could view sensitive information, (Confidentiality), and make some changes to disclosed information (Integrity), but they would not be able to affect Availability.",
          "title": "According to the CVSS metrics, successful exploitation of this vulnerability could lead to major loss of confidentiality (C:H), and some loss of integrity (I:L), but no loss of availability (A:N). What does that mean for this vulnerability?"
        },
        {
          "category": "faq",
          "text": "143.0.3650.66: 143.0.3650.66, 12/04/2025: 12/04/2025, 143.0.7499.40/.41: 143.0.7499.40/.41",
          "title": "What is the version information for this release?"
        }
      ],
      "product_status": {
        "fixed": [
          "11655"
        ],
        "known_affected": [
          "1"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2026-0391 Microsoft Edge (Chromium-based) for Android Spoofing Vulnerability - HTML",
          "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-0391"
        },
        {
          "category": "self",
          "summary": "CVE-2026-0391 Microsoft Edge (Chromium-based) for Android Spoofing Vulnerability - CSAF",
          "url": "https://msrc.microsoft.com/csaf/advisories/2026/msrc_cve-2026-0391.json"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-02-05T08:00:00.000Z",
          "details": "143.0.3650.66:Security Update:https://docs.microsoft.com/en-us/DeployEdge/microsoft-edge-relnotes-security",
          "product_ids": [
            "1"
          ],
          "url": "https://docs.microsoft.com/en-us/DeployEdge/microsoft-edge-relnotes-security"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "environmentalsScore": 0.0,
            "exploitCodeMaturity": "UNPROVEN",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "remediationLevel": "OFFICIAL_FIX",
            "reportConfidence": "CONFIRMED",
            "scope": "UNCHANGED",
            "temporalScore": 5.7,
            "userInteraction": "NONE",
            "vectorString": "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",
            "version": "3.1"
          },
          "products": [
            "1"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Spoofing"
        },
        {
          "category": "exploit_status",
          "details": "Publicly Disclosed:No;Exploited:No;Latest Software Release:Exploitation Less Likely"
        }
      ],
      "title": "Microsoft Edge (Chromium-based) for Android Spoofing Vulnerability"
    }
  ]
}

{
  "affected": [],
  "aliases": [
    "CVE-2026-0391"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-451"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-02-05T23:15:54Z",
    "severity": "MODERATE"
  },
  "details": "User interface (ui) misrepresentation of critical information in Microsoft Edge for Android allows an unauthorized attacker to perform spoofing over a network.",
  "id": "GHSA-m556-3vv4-6gm3",
  "modified": "2026-02-06T00:30:26Z",
  "published": "2026-02-06T00:30:26Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-0391"
    },
    {
      "type": "WEB",
      "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-0391"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N",
      "type": "CVSS_V3"
    }
  ]
}

{
  "$ref": "https://www.cert.ssi.gouv.fr/openapi.json",
  "affected_systems": [
    {
      "description": "Microsoft Edge versions ant\u00e9rieures \u00e0 144.0.3719.115",
      "product": {
        "name": "Edge",
        "vendor": {
          "name": "Microsoft",
          "scada": false
        }
      }
    }
  ],
  "affected_systems_content": "",
  "content": "## Solutions\n\nSe r\u00e9f\u00e9rer au bulletin de s\u00e9curit\u00e9 de l\u0027\u00e9diteur pour l\u0027obtention des correctifs (cf. section Documentation).",
  "cves": [
    {
      "name": "CVE-2026-1861",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-1861"
    },
    {
      "name": "CVE-2026-0391",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-0391"
    }
  ],
  "initial_release_date": "2026-02-06T00:00:00",
  "last_revision_date": "2026-02-06T00:00:00",
  "links": [],
  "reference": "CERTFR-2026-AVI-0124",
  "revisions": [
    {
      "description": "Version initiale",
      "revision_date": "2026-02-06T00:00:00.000000"
    }
  ],
  "risks": [
    {
      "description": "Non sp\u00e9cifi\u00e9 par l\u0027\u00e9diteur"
    },
    {
      "description": "Contournement de la politique de s\u00e9curit\u00e9"
    }
  ],
  "summary": "De multiples vuln\u00e9rabilit\u00e9s ont \u00e9t\u00e9 d\u00e9couvertes dans Microsoft Edge. Elles permettent \u00e0 un attaquant de provoquer un contournement de la politique de s\u00e9curit\u00e9 et un probl\u00e8me de s\u00e9curit\u00e9 non sp\u00e9cifi\u00e9 par l\u0027\u00e9diteur.",
  "title": "Multiples vuln\u00e9rabilit\u00e9s dans Microsoft Edge",
  "vendor_advisories": [
    {
      "published_at": "2026-02-05",
      "title": "Bulletin de s\u00e9curit\u00e9 Microsoft Edge CVE-2026-0391",
      "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-0391"
    },
    {
      "published_at": "2026-02-05",
      "title": "Bulletin de s\u00e9curit\u00e9 Microsoft Edge CVE-2026-1861",
      "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-1861"
    }
  ]
}