{
    "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-2026-33920",
        "tracking": {
            "current_release_date": "2026-10-13T18:58:22.258457Z",
            "generator": {
                "date": "2026-02-17T15:00:00Z",
                "engine": {
                    "name": "V.E.L.M.A",
                    "version": "1.7"
                }
            },
            "id": "CVE-2026-33920",
            "initial_release_date": "2026-09-08T14:39:48.070272Z",
            "revision_history": [
                {
                    "date": "2026-09-08T14:39:48.070272Z",
                    "number": "1",
                    "summary": "CVE created.| Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (1).| CWES updated (1)."
                },
                {
                    "date": "2026-09-08T14:39:49.944195Z",
                    "number": "2",
                    "summary": "NCSC Score created."
                },
                {
                    "date": "2026-09-08T14:41:25.954367Z",
                    "number": "3",
                    "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products connected (2).| References created (1).| CWES updated (1).| Unknown change."
                },
                {
                    "date": "2026-09-08T14:41:27.613450Z",
                    "number": "4",
                    "summary": "NCSC Score updated."
                },
                {
                    "date": "2026-09-09T15:46:39.388593Z",
                    "number": "5",
                    "summary": "EPSS created.| Unknown change."
                },
                {
                    "date": "2026-09-10T07:19:36.917448Z",
                    "number": "6",
                    "summary": "NCSC Score updated."
                },
                {
                    "date": "2026-09-29T15:56:00.067481Z",
                    "number": "7",
                    "summary": "EPSS created.| Unknown change."
                },
                {
                    "date": "2026-09-29T18:54:38.259935Z",
                    "number": "8",
                    "summary": "NCSC Score updated."
                },
                {
                    "date": "2026-10-13T09:46:19.913347Z",
                    "number": "9",
                    "summary": "Source connected.| CVE status created. (valid)"
                },
                {
                    "date": "2026-10-13T09:46:24.363003Z",
                    "number": "10",
                    "summary": "NCSC Score updated."
                },
                {
                    "date": "2026-10-13T12:51:07.898750Z",
                    "number": "11",
                    "summary": "Source connected.| CVE status created. (valid)| Description created for source.| CVSS created.| Products connected (1).| Product Remediations created (1).| References created (2).| CWES updated (1)."
                },
                {
                    "date": "2026-10-13T12:51:33.221312Z",
                    "number": "12",
                    "summary": "NCSC Score updated."
                }
            ],
            "status": "interim",
            "version": "12"
        }
    },
    "product_tree": {
        "branches": [
            {
                "branches": [
                    {
                        "branches": [
                            {
                                "category": "product_version_range",
                                "name": "vers:semver/<26.3.0",
                                "product": {
                                    "name": "vers:semver/<26.3.0",
                                    "product_id": "CSAFPID-9163584"
                                }
                            }
                        ],
                        "category": "product_name",
                        "name": "CMC"
                    },
                    {
                        "branches": [
                            {
                                "category": "product_version_range",
                                "name": "vers:semver/<26.3.0",
                                "product": {
                                    "name": "vers:semver/<26.3.0",
                                    "product_id": "CSAFPID-9163583"
                                }
                            }
                        ],
                        "category": "product_name",
                        "name": "Guardian"
                    },
                    {
                        "branches": [
                            {
                                "category": "product_version_range",
                                "name": "vers:unknown/>=0|<=26.3.0",
                                "product": {
                                    "name": "vers:unknown/>=0|<=26.3.0",
                                    "product_id": "CSAFPID-9448461",
                                    "product_identification_helper": {
                                        "cpe": "cpe:2.3:a:nozomi_networks:cmc:*:*:*:*:*:*:*:*"
                                    }
                                }
                            }
                        ],
                        "category": "product_name",
                        "name": "cmc"
                    },
                    {
                        "branches": [
                            {
                                "category": "product_version_range",
                                "name": "vers:unknown/>=0|<=26.3.0",
                                "product": {
                                    "name": "vers:unknown/>=0|<=26.3.0",
                                    "product_id": "CSAFPID-9448462",
                                    "product_identification_helper": {
                                        "cpe": "cpe:2.3:a:nozomi_networks:guardian:*:*:*:*:*:*:*:*"
                                    }
                                }
                            }
                        ],
                        "category": "product_name",
                        "name": "guardian"
                    }
                ],
                "category": "vendor",
                "name": "Nozomi Networks"
            },
            {
                "branches": [
                    {
                        "branches": [
                            {
                                "category": "product_version_range",
                                "name": "vers:all/*",
                                "product": {
                                    "name": "vers:all/*",
                                    "product_id": "CSAFPID-1272525"
                                }
                            }
                        ],
                        "category": "product_name",
                        "name": "RUGGEDCOM APE1808"
                    }
                ],
                "category": "vendor",
                "name": "Siemens"
            }
        ]
    },
    "vulnerabilities": [
        {
            "cve": "CVE-2026-33920",
            "cwe": {
                "id": "CWE-352",
                "name": "Cross-Site Request Forgery (CSRF)"
            },
            "notes": [
                {
                    "category": "description",
                    "text": "A cross-site request forgery vulnerability was discovered in the login functionality (both standard and SAML) due to missing validation of the anti-CSRF token. An attacker with a valid account can trick a victim into unknowingly authenticating with the attacker's credentials. Any operation performed by the victim in this state is attributed to the attacker's account, compromising the integrity of the audit trail.",
                    "title": "siemens - https://cert-portal.siemens.com/productcert/csaf/ssa-911336.json"
                },
                {
                    "category": "description",
                    "text": "A cross-site request forgery vulnerability was discovered in the login functionality (both standard and SAML) due to missing validation of the anti-CSRF token. An attacker with a valid account can trick a victim into unknowingly authenticating with the attacker's credentials. Any operation performed by the victim in this state is attributed to the attacker's account, compromising the integrity of the audit trail.",
                    "title": "nvd - https://nvd.nist.gov/vuln/detail/CVE-2026-33920"
                },
                {
                    "category": "description",
                    "text": "A cross-site request forgery vulnerability was discovered in the login functionality (both standard and SAML) due to missing validation of the anti-CSRF token. An attacker with a valid account can trick a victim into unknowingly authenticating with the attacker's credentials. Any operation performed by the victim in this state is attributed to the attacker's account, compromising the integrity of the audit trail.",
                    "title": "cveprojectv5 - https://www.cve.org/CVERecord?id=CVE-2026-33920"
                },
                {
                    "category": "other",
                    "text": "0.00131",
                    "title": "EPSS"
                },
                {
                    "category": "other",
                    "text": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
                    "title": "CVSSV4"
                },
                {
                    "category": "other",
                    "text": "5.1",
                    "title": "CVSSV4 base score"
                },
                {
                    "category": "other",
                    "text": "6.8",
                    "title": "NCSC Score"
                },
                {
                    "category": "other",
                    "text": "There is product data available from source Siemens, Is related to (a version of) an uncommon product, VENDOR FIX as product remediation category, There is cvss data available from source Siemens, There is cwe data available from source Siemens, Is related to a product by vendor Siemens",
                    "title": "NCSC Score top increasing factors"
                },
                {
                    "category": "other",
                    "text": "There is cwe data available from source Nvd, Is related to CWE-352 (Cross-Site Request Forgery (CSRF))",
                    "title": "NCSC Score top decreasing factors"
                }
            ],
            "product_status": {
                "known_affected": [
                    "CSAFPID-9163584",
                    "CSAFPID-9163583",
                    "CSAFPID-9448461",
                    "CSAFPID-9448462",
                    "CSAFPID-1272525"
                ]
            },
            "references": [
                {
                    "category": "external",
                    "summary": "Source - ncscclear",
                    "url": "https://vulnerabilities.ncsc.nl/manual/CVE-2026-33920"
                },
                {
                    "category": "external",
                    "summary": "Source - nvd",
                    "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-33920"
                },
                {
                    "category": "external",
                    "summary": "Source - first",
                    "url": "https://api.first.org/data/v1/epss"
                },
                {
                    "category": "external",
                    "summary": "Source - cveprojectv5",
                    "url": "https://www.cve.org/CVERecord?id=CVE-2026-33920"
                },
                {
                    "category": "external",
                    "summary": "Source - ncscclear",
                    "url": "https://advisories.ncsc.nl/advisory?id=NCSC-2026-0415"
                },
                {
                    "category": "external",
                    "summary": "Source - siemens",
                    "url": "https://cert-portal.siemens.com/productcert/csaf/ssa-911336.json"
                },
                {
                    "category": "external",
                    "summary": "Reference - cveprojectv5; nvd",
                    "url": "https://security.nozominetworks.com/NN-2026:18-01"
                },
                {
                    "category": "external",
                    "summary": "Reference - siemens",
                    "url": "https://cert-portal.siemens.com/productcert/csaf/ssa-911336.json"
                },
                {
                    "category": "external",
                    "summary": "Reference - siemens",
                    "url": "https://cert-portal.siemens.com/productcert/html/ssa-911336.html"
                }
            ],
            "remediations": [
                {
                    "category": "vendor_fix",
                    "details": "Contact customer support to receive patch and update information",
                    "product_ids": [
                        "CSAFPID-1272525"
                    ]
                }
            ],
            "scores": [
                {
                    "cvss_v3": {
                        "version": "3.1",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N",
                        "baseScore": 3.5,
                        "baseSeverity": "LOW"
                    },
                    "products": [
                        "CSAFPID-1272525",
                        "CSAFPID-9163583",
                        "CSAFPID-9163584",
                        "CSAFPID-9448461",
                        "CSAFPID-9448462"
                    ]
                }
            ],
            "title": "CVE-2026-33920"
        }
    ]
}