{
    "document": {
        "category": "csaf_base",
        "csaf_version": "2.0",
        "distribution": {
            "tlp": {
                "label": "WHITE"
            }
        },
        "lang": "en",
        "notes": [
            {
                "category": "legal_disclaimer",
                "text": "The Netherlands Cyber Security Center (henceforth: NCSC-NL) maintains this portal to enhance access to its information and vulnerabilities. The use of this information is subject to the following terms and conditions:\n\nThe vulnerabilities disclosed in this portal are gathered by NCSC-NL from a variety of open sources, which the user can retrieve from other platforms. NCSC-NL makes every reasonable effort to ensure that the content of this portal 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 real-time keeping up-to-date. NCSC-NL does not control nor guarantee the accuracy, relevance, timeliness or completeness of information obtained from these external sources. The vulnerabilities disclosed in this portal are intended solely for the convenience of professional parties to take appropriate measures to manage the risks posed to the cybersecurity. No rights can be derived from the information provided therein.\n\nNCSC-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 the vulnerabilities disclosed in this portal. This includes damage resulting from the inaccuracy of incompleteness of the information contained in it.\nThe information on this page is subject to Dutch law. All disputes related to or arising from the use of this portal regarding the disclosure of vulnerabilities will be submitted to the competent court in The Hague. This choice of means also applies to the court in summary proceedings."
            }
        ],
        "publisher": {
            "category": "coordinator",
            "contact_details": "cert@ncsc.nl",
            "name": "National Cyber Security Centre",
            "namespace": "https://www.ncsc.nl/"
        },
        "title": "CVE-2026-3991",
        "tracking": {
            "current_release_date": "2026-04-03T13:47:26.817127Z",
            "generator": {
                "date": "2026-02-17T15:00:00Z",
                "engine": {
                    "name": "V.E.L.M.A",
                    "version": "1.7"
                }
            },
            "id": "CVE-2026-3991",
            "initial_release_date": "2026-03-30T18:39:37.891655Z",
            "revision_history": [
                {
                    "date": "2026-03-30T18:39:37.891655Z",
                    "number": "1",
                    "summary": "CVE created.| Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products created (5).| References created (1).| CWES updated (1)."
                },
                {
                    "date": "2026-03-30T18:39:40.538770Z",
                    "number": "2",
                    "summary": "NCSC Score created."
                },
                {
                    "date": "2026-03-30T19:26:43.619560Z",
                    "number": "3",
                    "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (1).| CWES updated (1)."
                },
                {
                    "date": "2026-03-30T19:26:45.034871Z",
                    "number": "4",
                    "summary": "NCSC Score updated."
                },
                {
                    "date": "2026-03-31T04:38:46.654207Z",
                    "number": "5",
                    "summary": "Unknown change."
                },
                {
                    "date": "2026-03-31T10:09:53.558956Z",
                    "number": "6",
                    "summary": "Source created.| CVE status created. (valid)| Products created (5).| References created (4)."
                },
                {
                    "date": "2026-03-31T10:09:58.708808Z",
                    "number": "7",
                    "summary": "NCSC Score updated."
                },
                {
                    "date": "2026-03-31T16:53:58.138295Z",
                    "number": "8",
                    "summary": "Source connected.| CVE status created. (valid)| EPSS created."
                },
                {
                    "date": "2026-03-31T16:54:06.048949Z",
                    "number": "9",
                    "summary": "NCSC Score updated."
                },
                {
                    "date": "2026-04-03T13:31:21.661206Z",
                    "number": "10",
                    "summary": "Source created.| CVE status created. (valid)| News created (1)."
                },
                {
                    "date": "2026-04-03T13:31:31.999008Z",
                    "number": "11",
                    "summary": "NCSC Score updated."
                }
            ],
            "status": "interim",
            "version": "11"
        }
    },
    "product_tree": {
        "branches": [
            {
                "branches": [
                    {
                        "branches": [
                            {
                                "category": "product_version_range",
                                "name": "vers:unknown/16.0.00215.62094",
                                "product": {
                                    "name": "vers:unknown/16.0.00215.62094",
                                    "product_id": "CSAFPID-5965557"
                                }
                            },
                            {
                                "category": "product_version_range",
                                "name": "vers:unknown/16.0.10112.60928",
                                "product": {
                                    "name": "vers:unknown/16.0.10112.60928",
                                    "product_id": "CSAFPID-5965556"
                                }
                            },
                            {
                                "category": "product_version_range",
                                "name": "vers:unknown/16.0.20009.60689",
                                "product": {
                                    "name": "vers:unknown/16.0.20009.60689",
                                    "product_id": "CSAFPID-5965555"
                                }
                            },
                            {
                                "category": "product_version_range",
                                "name": "vers:unknown/16.1.00200.60431",
                                "product": {
                                    "name": "vers:unknown/16.1.00200.60431",
                                    "product_id": "CSAFPID-5965554"
                                }
                            },
                            {
                                "category": "product_version_range",
                                "name": "vers:unknown/25.1.00100.60229",
                                "product": {
                                    "name": "vers:unknown/25.1.00100.60229",
                                    "product_id": "CSAFPID-5965553"
                                }
                            }
                        ],
                        "category": "product_name",
                        "name": "Data Loss Prevention"
                    }
                ],
                "category": "vendor",
                "name": "Broadcom"
            },
            {
                "branches": [
                    {
                        "branches": [
                            {
                                "category": "product_version_range",
                                "name": "vers:unknown/<dlp 16.0 mp2 hf15",
                                "product": {
                                    "name": "vers:unknown/<dlp 16.0 mp2 hf15",
                                    "product_id": "CSAFPID-5968077"
                                }
                            },
                            {
                                "category": "product_version_range",
                                "name": "vers:unknown/<dlp 16.0 ru1 mp1 hf12",
                                "product": {
                                    "name": "vers:unknown/<dlp 16.0 ru1 mp1 hf12",
                                    "product_id": "CSAFPID-5968081"
                                }
                            },
                            {
                                "category": "product_version_range",
                                "name": "vers:unknown/<dlp 16.0 ru2 hf9",
                                "product": {
                                    "name": "vers:unknown/<dlp 16.0 ru2 hf9",
                                    "product_id": "CSAFPID-5968079"
                                }
                            },
                            {
                                "category": "product_version_range",
                                "name": "vers:unknown/<dlp 16.1 mp2",
                                "product": {
                                    "name": "vers:unknown/<dlp 16.1 mp2",
                                    "product_id": "CSAFPID-5968080"
                                }
                            },
                            {
                                "category": "product_version_range",
                                "name": "vers:unknown/<dlp 25.1 mp1",
                                "product": {
                                    "name": "vers:unknown/<dlp 25.1 mp1",
                                    "product_id": "CSAFPID-5968078"
                                }
                            }
                        ],
                        "category": "product_name",
                        "name": "Data Loss Prevention"
                    }
                ],
                "category": "vendor",
                "name": "Symantec"
            }
        ]
    },
    "vulnerabilities": [
        {
            "cve": "CVE-2026-3991",
            "cwe": {
                "id": "CWE-829",
                "name": "Inclusion of Functionality from Untrusted Control Sphere"
            },
            "notes": [
                {
                    "category": "description",
                    "text": "Symantec Data Loss Prevention Windows Endpoint, prior to 25.1 MP1, 16.1 MP2, 16.0 RU2 HF9, 16.0 RU1 MP1 HF12, and 16.0 MP2 HF15, may be susceptible to a Elevation of Privilege vulnerability, which is a type of issue whereby an attacker may attempt to compromise the software application to gain elevated access to resources that are normally protected from an application or user.",
                    "title": "cveprojectv5 - https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/3xxx/CVE-2026-3991.json"
                },
                {
                    "category": "description",
                    "text": "Symantec Data Loss Prevention Windows Endpoint, prior to 25.1 MP1, 16.1 MP2, 16.0 RU2 HF9, 16.0 RU1 MP1 HF12, and 16.0 MP2 HF15, may be susceptible to a Elevation of Privilege vulnerability, which is a type of issue whereby an attacker may attempt to compromise the software application to gain elevated access to resources that are normally protected from an application or user.",
                    "title": "nvd - https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-3991"
                },
                {
                    "category": "other",
                    "text": "0.00013",
                    "title": "EPSS"
                },
                {
                    "category": "other",
                    "text": "4.1",
                    "title": "NCSC Score"
                },
                {
                    "category": "other",
                    "text": "There is news data available from source Securityweek, There is product data available from source Certbundde",
                    "title": "NCSC Score top increasing factors"
                },
                {
                    "category": "other",
                    "text": "The CVSS vector string contains A:H (Availability Impact: High), There is cwe data available from source Nvd, Is related to CWE-829 (Inclusion of Functionality from Untrusted Control Sphere)",
                    "title": "NCSC Score top decreasing factors"
                }
            ],
            "product_status": {
                "known_affected": [
                    "CSAFPID-5968077",
                    "CSAFPID-5968078",
                    "CSAFPID-5968079",
                    "CSAFPID-5968080",
                    "CSAFPID-5968081"
                ],
                "known_not_affected": [
                    "CSAFPID-5965553",
                    "CSAFPID-5965554",
                    "CSAFPID-5965555",
                    "CSAFPID-5965556",
                    "CSAFPID-5965557"
                ]
            },
            "references": [
                {
                    "category": "external",
                    "summary": "Source - cveprojectv5",
                    "url": "https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/3xxx/CVE-2026-3991.json"
                },
                {
                    "category": "external",
                    "summary": "Source - nvd",
                    "url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-3991"
                },
                {
                    "category": "external",
                    "summary": "Source - certbundde",
                    "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-0921.json"
                },
                {
                    "category": "external",
                    "summary": "Source - first",
                    "url": "https://api.first.org/data/v1/epss?limit=10000&offset=0"
                },
                {
                    "category": "external",
                    "summary": "Source - securityweek",
                    "url": "https://www.securityweek.com/in-other-news-chatgpt-data-leak-android-rootkit-water-facility-hit-by-ransomware/"
                },
                {
                    "category": "external",
                    "summary": "News - securityweek",
                    "url": "https://www.securityweek.com/in-other-news-chatgpt-data-leak-android-rootkit-water-facility-hit-by-ransomware/"
                },
                {
                    "category": "external",
                    "summary": "Reference - certbundde; cveprojectv5; nvd",
                    "url": "https://support.broadcom.com/web/ecx/support-content-notification/-/external/content/SecurityAdvisories/0/37306"
                },
                {
                    "category": "external",
                    "summary": "Reference - certbundde",
                    "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-0921.json"
                },
                {
                    "category": "external",
                    "summary": "Reference - certbundde",
                    "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-0921"
                },
                {
                    "category": "external",
                    "summary": "Reference - certbundde",
                    "url": "https://euvd.enisa.europa.eu/enisa/EUVD-2026-17164"
                }
            ],
            "scores": [
                {
                    "cvss_v3": {
                        "version": "3.1",
                        "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                        "baseScore": 7.8,
                        "baseSeverity": "HIGH"
                    },
                    "products": [
                        "CSAFPID-5968077",
                        "CSAFPID-5968078",
                        "CSAFPID-5968079",
                        "CSAFPID-5968080",
                        "CSAFPID-5968081"
                    ]
                }
            ],
            "title": "CVE-2026-3991"
        }
    ]
}