{
    "document": {
        "category": "csaf_security_advisory",
        "csaf_version": "2.0",
        "distribution": {
            "tlp": {
                "label": "WHITE"
            }
        },
        "lang": "nl",
        "notes": [
            {
                "category": "legal_disclaimer",
                "text": "The Netherlands Cyber Security Center (henceforth: NCSC-NL) maintains this page to enhance access to its information and security advisories. The use of this security advisory is subject to the following terms and conditions:\n\n    NCSC-NL makes every reasonable effort to ensure that the content of this page is kept up to date, and that it is accurate and complete. Nevertheless, NCSC-NL cannot entirely rule out the possibility of errors, and therefore cannot give any warranty in respect of its completeness, accuracy or continuous keeping up-to-date. The information contained in this security advisory is intended solely for the purpose of providing general information to professional users. No rights can be derived from the information provided therein.\n\n    NCSC-NL and the Kingdom of the Netherlands assume no legal liability or responsibility for any damage resulting from either the use or inability of use of this security advisory. This includes damage resulting from the inaccuracy of incompleteness of the information contained in the advisory.\n    This security advisory is subject to Dutch law. All disputes related to or arising from the use of this advisory will be submitted to the competent court in The Hague. This choice of means also applies to the court in summary proceedings."
            },
            {
                "category": "description",
                "text": "Apple heeft een kwetsbaarheid verholpen in de Screen Sharing feature van macOS versies Sequoia 15.7.9, Sonoma 14.8.9 en Tahoe 26.6.1.",
                "title": "Feiten"
            },
            {
                "category": "description",
                "text": "De kwetsbaarheid betreft een authenticatieprobleem in de Screen Sharing functionaliteit waarbij netwerkaanvallers toegang kunnen verkrijgen zonder geldige inloggegevens. Dit wordt mogelijk gemaakt door onvoldoende state management tijdens het authenticatieproces. Hierdoor kunnen onbevoegden authenticatiepogingen uitvoeren die normaal niet geaccepteerd zouden worden.",
                "title": "Interpretaties"
            },
            {
                "category": "description",
                "text": "Apple heeft de state management mechanismen verbeterd om correcte validatie van inloggegevens af te dwingen en ongeautoriseerde authenticatiepogingen te voorkomen. Updates zijn uitgebracht die ervoor zorgen dat alleen geldige inloggegevens worden geaccepteerd. Zie bijgevoegde referenties voor meer informatie.",
                "title": "Oplossingen"
            },
            {
                "category": "general",
                "text": "medium",
                "title": "Kans"
            },
            {
                "category": "general",
                "text": "high",
                "title": "Schade"
            },
            {
                "category": "general",
                "text": "Improper Authentication",
                "title": "CWE-287"
            }
        ],
        "publisher": {
            "category": "coordinator",
            "contact_details": "cert@ncsc.nl",
            "name": "Nationaal Cyber Security Centrum",
            "namespace": "https://www.ncsc.nl/"
        },
        "references": [
            {
                "category": "external",
                "summary": "Reference",
                "url": "https://support.apple.com/en-us/148170"
            },
            {
                "category": "external",
                "summary": "Reference",
                "url": "https://support.apple.com/en-us/148171"
            },
            {
                "category": "external",
                "summary": "Reference",
                "url": "https://support.apple.com/en-us/148172"
            }
        ],
        "title": "Kwetsbaarheid verholpen in macOS Screen Sharing door Apple",
        "tracking": {
            "current_release_date": "2026-08-07T11:39:25.737295Z",
            "generator": {
                "date": "2025-08-04T16:30:00Z",
                "engine": {
                    "name": "V.A.",
                    "version": "1.3"
                }
            },
            "id": "NCSC-2026-0280",
            "initial_release_date": "2026-08-07T11:39:25.737295Z",
            "revision_history": [
                {
                    "date": "2026-08-07T11:39:25.737295Z",
                    "number": "1.0.0",
                    "summary": "Initiele versie"
                }
            ],
            "status": "final",
            "version": "1.0.0"
        }
    },
    "product_tree": {
        "branches": [
            {
                "branches": [
                    {
                        "branches": [
                            {
                                "category": "product_version_range",
                                "name": "vers:unknown/*",
                                "product": {
                                    "name": "vers:unknown/*",
                                    "product_id": "CSAFPID-1"
                                }
                            }
                        ],
                        "category": "product_name",
                        "name": "macOS Sequoia"
                    },
                    {
                        "branches": [
                            {
                                "category": "product_version_range",
                                "name": "vers:unknown/*",
                                "product": {
                                    "name": "vers:unknown/*",
                                    "product_id": "CSAFPID-2"
                                }
                            }
                        ],
                        "category": "product_name",
                        "name": "macOS Sonoma"
                    },
                    {
                        "branches": [
                            {
                                "category": "product_version_range",
                                "name": "vers:unknown/*",
                                "product": {
                                    "name": "vers:unknown/*",
                                    "product_id": "CSAFPID-3"
                                }
                            }
                        ],
                        "category": "product_name",
                        "name": "macOS Tahoe"
                    }
                ],
                "category": "vendor",
                "name": "Apple"
            }
        ]
    },
    "vulnerabilities": [
        {
            "cve": "CVE-2026-65400",
            "notes": [
                {
                    "category": "description",
                    "text": "An authentication vulnerability in macOS Sequoia 15.7.9, Sonoma 14.8.9, and Tahoe 26.6.1 was fixed by improving state management to prevent unauthorized network access to Screen Sharing without valid credentials.",
                    "title": "Summary"
                }
            ],
            "product_status": {
                "known_affected": [
                    "CSAFPID-1",
                    "CSAFPID-2",
                    "CSAFPID-3"
                ]
            },
            "references": [
                {
                    "category": "self",
                    "summary": "CVE-2026-65400 | NCSC-NL Website",
                    "url": "https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-2026-65400.json"
                }
            ],
            "scores": [
                {
                    "cvss_v3": {
                        "version": "3.1",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N",
                        "baseScore": 7.1,
                        "baseSeverity": "HIGH"
                    },
                    "products": [
                        "CSAFPID-1",
                        "CSAFPID-2",
                        "CSAFPID-3"
                    ]
                }
            ],
            "title": "CVE-2026-65400"
        }
    ]
}