{
    "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-2026-26967",
        "tracking": {
            "current_release_date": "2026-03-23T03:32:35.546658Z",
            "generator": {
                "date": "2026-02-17T15:00:00Z",
                "engine": {
                    "name": "V.E.L.M.A",
                    "version": "1.7"
                }
            },
            "id": "CVE-2026-26967",
            "initial_release_date": "2026-02-20T01:24:54.112352Z",
            "revision_history": [
                {
                    "date": "2026-02-20T01:24:54.112352Z",
                    "number": "1",
                    "summary": "CVE created.| Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (2).| CWES updated (1)."
                },
                {
                    "date": "2026-02-20T01:24:58.865101Z",
                    "number": "2",
                    "summary": "NCSC Score created."
                },
                {
                    "date": "2026-02-20T01:38:53.045745Z",
                    "number": "3",
                    "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products created (1).| References created (2).| CWES updated (1)."
                },
                {
                    "date": "2026-02-20T01:38:55.644342Z",
                    "number": "4",
                    "summary": "NCSC Score updated."
                },
                {
                    "date": "2026-02-20T07:35:02.505144Z",
                    "number": "5",
                    "summary": "NCSC Score updated."
                },
                {
                    "date": "2026-02-20T12:27:52.201344Z",
                    "number": "6",
                    "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (4).| CWES updated (1).| Vendor_assessment created."
                },
                {
                    "date": "2026-02-20T12:27:58.595574Z",
                    "number": "7",
                    "summary": "NCSC Score updated."
                },
                {
                    "date": "2026-02-20T13:29:42.257121Z",
                    "number": "8",
                    "summary": "NCSC Score updated."
                },
                {
                    "date": "2026-02-20T14:13:32.820505Z",
                    "number": "9",
                    "summary": "Source created.| CVE status created. (valid)| EPSS created."
                },
                {
                    "date": "2026-02-20T14:13:35.719663Z",
                    "number": "10",
                    "summary": "NCSC Score updated."
                },
                {
                    "date": "2026-02-20T17:04:23.521118Z",
                    "number": "11",
                    "summary": "Unknown change."
                },
                {
                    "date": "2026-02-20T20:28:04.536846Z",
                    "number": "12",
                    "summary": "CVSS created.| Products connected (1).| Product Identifiers created (1)."
                },
                {
                    "date": "2026-02-20T20:28:07.209653Z",
                    "number": "13",
                    "summary": "NCSC Score updated."
                },
                {
                    "date": "2026-02-25T22:23:43.705968Z",
                    "number": "14",
                    "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products connected (7).| References created (4).| CWES updated (1)."
                },
                {
                    "date": "2026-02-25T22:23:50.011069Z",
                    "number": "15",
                    "summary": "NCSC Score updated."
                },
                {
                    "date": "2026-03-20T09:42:58.580709Z",
                    "number": "16",
                    "summary": "Source connected.| CVE status created. (valid)| EPSS created."
                }
            ],
            "status": "interim",
            "version": "16"
        }
    },
    "product_tree": {
        "branches": [
            {
                "branches": [
                    {
                        "branches": [
                            {
                                "category": "product_version_range",
                                "name": "vers:unknown/2.10",
                                "product": {
                                    "name": "vers:unknown/2.10",
                                    "product_id": "CSAFPID-4137583"
                                }
                            },
                            {
                                "category": "product_version_range",
                                "name": "vers:unknown/2.11",
                                "product": {
                                    "name": "vers:unknown/2.11",
                                    "product_id": "CSAFPID-4137584"
                                }
                            },
                            {
                                "category": "product_version_range",
                                "name": "vers:unknown/2.12",
                                "product": {
                                    "name": "vers:unknown/2.12",
                                    "product_id": "CSAFPID-4137585"
                                }
                            },
                            {
                                "category": "product_version_range",
                                "name": "vers:unknown/2.13",
                                "product": {
                                    "name": "vers:unknown/2.13",
                                    "product_id": "CSAFPID-4137586"
                                }
                            },
                            {
                                "category": "product_version_range",
                                "name": "vers:unknown/2.14",
                                "product": {
                                    "name": "vers:unknown/2.14",
                                    "product_id": "CSAFPID-5203087"
                                }
                            },
                            {
                                "category": "product_version_range",
                                "name": "vers:unknown/2.15",
                                "product": {
                                    "name": "vers:unknown/2.15",
                                    "product_id": "CSAFPID-5203088"
                                }
                            },
                            {
                                "category": "product_version_range",
                                "name": "vers:unknown/2.16",
                                "product": {
                                    "name": "vers:unknown/2.16",
                                    "product_id": "CSAFPID-5602582"
                                }
                            },
                            {
                                "category": "product_version_range",
                                "name": "vers:unknown/<f821c214e52b11bae11e4cd3c7f0864538fb5491",
                                "product": {
                                    "name": "vers:unknown/<f821c214e52b11bae11e4cd3c7f0864538fb5491",
                                    "product_id": "CSAFPID-5643426"
                                }
                            }
                        ],
                        "category": "product_name",
                        "name": "pjproject"
                    },
                    {
                        "branches": [
                            {
                                "category": "product_version_range",
                                "name": "vers:unknown/<2.17",
                                "product": {
                                    "name": "vers:unknown/<2.17",
                                    "product_id": "CSAFPID-5652558",
                                    "product_identification_helper": {
                                        "cpe": "cpe:2.3:a:pjsip:pjsip:*:*:*:*:*:*:*:*"
                                    }
                                }
                            }
                        ],
                        "category": "product_name",
                        "name": "pjsip"
                    }
                ],
                "category": "vendor",
                "name": "pjsip"
            }
        ]
    },
    "vulnerabilities": [
        {
            "cve": "CVE-2026-26967",
            "cwe": {
                "id": "CWE-122",
                "name": "Heap-based Buffer Overflow"
            },
            "notes": [
                {
                    "category": "description",
                    "text": "PJSIP is a free and open source multimedia communication library written in C. In versions 2.16 and below, there is a critical Heap-based Buffer Overflow vulnerability in PJSIP's H.264 unpacketizer. The bug occurs when processing malformed SRTP packets, where the unpacketizer reads a 2-byte NAL unit size field without validating that both bytes are within the payload buffer bounds. The vulnerability affects applications that receive video using H.264. A patch is available at https://github.com/pjsip/pjproject/commit/f821c214e52b11bae11e4cd3c7f0864538fb5491.",
                    "title": "nvd - https://nvd.nist.gov/vuln/detail/CVE-2026-26967"
                },
                {
                    "category": "description",
                    "text": "PJSIP is a free and open source multimedia communication library written in C. In versions 2.16 and below, there is a critical Heap-based Buffer Overflow vulnerability in PJSIP's H.264 unpacketizer. The bug occurs when processing malformed SRTP packets, where the unpacketizer reads a 2-byte NAL unit size field without validating that both bytes are within the payload buffer bounds. The vulnerability affects applications that receive video using H.264. A patch is available at https://github.com/pjsip/pjproject/commit/f821c214e52b11bae11e4cd3c7f0864538fb5491.",
                    "title": "cveprojectv5 - https://www.cve.org/CVERecord?id=CVE-2026-26967"
                },
                {
                    "category": "description",
                    "text": "A flaw was found in PJSIP. A remote attacker could exploit a heap-based buffer overflow vulnerability in the H.264 unpacketizer by sending specially crafted Secure Real-time Transport Protocol (SRTP) packets. The unpacketizer fails to validate the bounds of a 2-byte Network Abstraction Layer (NAL) unit size field, which can lead to arbitrary code execution.\nExploiting this vulnerability requires that an attacker can induce the processing of untrusted content. If an application accepting input from remote sources processes H.264 content with PJSIP, this vulnerability could consequently be exploited remotely.",
                    "title": "redhat - https://access.redhat.com/security/cve/CVE-2026-26967"
                },
                {
                    "category": "description",
                    "text": "PJSIP is a free and open source multimedia communication library written in C. In versions 2.16 and below, there is a critical Heap-based Buffer Overflow vulnerability in PJSIP's H.264 unpacketizer. The bug occurs when processing malformed SRTP packets, where the unpacketizer reads a 2-byte NAL unit size field without validating that both bytes are within the payload buffer bounds. The vulnerability affects applications that receive video using H.264. A patch is available at https://github.com/pjsip/pjproject/commit/f821c214e52b11bae11e4cd3c7f0864538fb5491.",
                    "title": "osv - https://www.googleapis.com/download/storage/v1/b/osv-vulnerabilities/o/GIT%2FCVE-2026-26967.json?alt=media"
                },
                {
                    "category": "other",
                    "text": "0.00013",
                    "title": "EPSS"
                },
                {
                    "category": "other",
                    "text": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/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": "8.1",
                    "title": "CVSSV4 base score"
                },
                {
                    "category": "other",
                    "text": "4.8",
                    "title": "NCSC Score"
                },
                {
                    "category": "other",
                    "text": "The value of the most recent CVSS (V3) score",
                    "title": "NCSC Score top decreasing factors"
                },
                {
                    "category": "details",
                    "text": "Severity: 3\n",
                    "title": "Vendor assessment"
                }
            ],
            "product_status": {
                "known_affected": [
                    "CSAFPID-5643426",
                    "CSAFPID-5652558",
                    "CSAFPID-4137583",
                    "CSAFPID-4137584",
                    "CSAFPID-4137585",
                    "CSAFPID-4137586",
                    "CSAFPID-5203087",
                    "CSAFPID-5203088",
                    "CSAFPID-5602582"
                ]
            },
            "references": [
                {
                    "category": "external",
                    "summary": "Source - nvd",
                    "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-26967"
                },
                {
                    "category": "external",
                    "summary": "Source raw - nvd",
                    "url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-26967"
                },
                {
                    "category": "external",
                    "summary": "Source - cveprojectv5",
                    "url": "https://www.cve.org/CVERecord?id=CVE-2026-26967"
                },
                {
                    "category": "external",
                    "summary": "Source raw - cveprojectv5",
                    "url": "https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/26xxx/CVE-2026-26967.json"
                },
                {
                    "category": "external",
                    "summary": "Source - redhat",
                    "url": "https://access.redhat.com/security/cve/CVE-2026-26967"
                },
                {
                    "category": "external",
                    "summary": "Source raw - redhat",
                    "url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-26967.json"
                },
                {
                    "category": "external",
                    "summary": "Source - first",
                    "url": "https://api.first.org/data/v1/epss?cve=CVE-2026-26967"
                },
                {
                    "category": "external",
                    "summary": "Source raw - first",
                    "url": "https://api.first.org/data/v1/epss?limit=10000&offset=0"
                },
                {
                    "category": "external",
                    "summary": "Source - osv",
                    "url": "https://www.googleapis.com/download/storage/v1/b/osv-vulnerabilities/o/GIT%2FCVE-2026-26967.json?alt=media"
                },
                {
                    "category": "external",
                    "summary": "Source - first",
                    "url": "https://api.first.org/data/v1/epss?limit=10000&offset=0"
                },
                {
                    "category": "external",
                    "summary": "Reference - cveprojectv5; nvd; osv; redhat",
                    "url": "https://github.com/pjsip/pjproject/commit/f821c214e52b11bae11e4cd3c7f0864538fb5491"
                },
                {
                    "category": "external",
                    "summary": "Reference - cveprojectv5; nvd; osv; redhat",
                    "url": "https://github.com/pjsip/pjproject/security/advisories/GHSA-x2hc-6969-g8v6"
                },
                {
                    "category": "external",
                    "summary": "Reference - redhat",
                    "url": "https://www.cve.org/CVERecord?id=CVE-2026-26967"
                },
                {
                    "category": "external",
                    "summary": "Reference - osv; redhat",
                    "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-26967"
                },
                {
                    "category": "external",
                    "summary": "Reference - osv",
                    "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/26xxx/CVE-2026-26967.json"
                }
            ],
            "scores": [
                {
                    "cvss_v3": {
                        "version": "3.1",
                        "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                        "baseScore": 8.4,
                        "baseSeverity": "HIGH"
                    },
                    "products": [
                        "CSAFPID-4137583",
                        "CSAFPID-4137584",
                        "CSAFPID-4137585",
                        "CSAFPID-4137586",
                        "CSAFPID-5203087",
                        "CSAFPID-5203088",
                        "CSAFPID-5602582",
                        "CSAFPID-5643426",
                        "CSAFPID-5652558"
                    ]
                }
            ],
            "title": "CVE-2026-26967"
        }
    ]
}