{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-2966",
        "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
        "state": "PUBLISHED",
        "assignerShortName": "VulDB",
        "dateReserved": "2026-02-22T07:57:24.272Z",
        "datePublished": "2026-02-23T02:02:08.202Z",
        "dateUpdated": "2026-02-23T13:36:51.905Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
                "shortName": "VulDB",
                "dateUpdated": "2026-02-23T02:02:08.202Z"
            },
            "title": "Cesanta Mongoose DNS Transaction ID dns.c mg_sendnsreq random values",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "type": "CWE",
                            "cweId": "CWE-330",
                            "lang": "en",
                            "description": "Insufficiently Random Values"
                        }
                    ]
                },
                {
                    "descriptions": [
                        {
                            "type": "CWE",
                            "cweId": "CWE-310",
                            "lang": "en",
                            "description": "Cryptographic Issues"
                        }
                    ]
                }
            ],
            "affected": [
                {
                    "vendor": "Cesanta",
                    "product": "Mongoose",
                    "versions": [
                        {
                            "version": "7.0",
                            "status": "affected"
                        },
                        {
                            "version": "7.1",
                            "status": "affected"
                        },
                        {
                            "version": "7.2",
                            "status": "affected"
                        },
                        {
                            "version": "7.3",
                            "status": "affected"
                        },
                        {
                            "version": "7.4",
                            "status": "affected"
                        },
                        {
                            "version": "7.5",
                            "status": "affected"
                        },
                        {
                            "version": "7.6",
                            "status": "affected"
                        },
                        {
                            "version": "7.7",
                            "status": "affected"
                        },
                        {
                            "version": "7.8",
                            "status": "affected"
                        },
                        {
                            "version": "7.9",
                            "status": "affected"
                        },
                        {
                            "version": "7.10",
                            "status": "affected"
                        },
                        {
                            "version": "7.11",
                            "status": "affected"
                        },
                        {
                            "version": "7.12",
                            "status": "affected"
                        },
                        {
                            "version": "7.13",
                            "status": "affected"
                        },
                        {
                            "version": "7.14",
                            "status": "affected"
                        },
                        {
                            "version": "7.15",
                            "status": "affected"
                        },
                        {
                            "version": "7.16",
                            "status": "affected"
                        },
                        {
                            "version": "7.17",
                            "status": "affected"
                        },
                        {
                            "version": "7.18",
                            "status": "affected"
                        },
                        {
                            "version": "7.19",
                            "status": "affected"
                        },
                        {
                            "version": "7.20",
                            "status": "affected"
                        }
                    ],
                    "cpes": [
                        "cpe:2.3:a:cesanta:mongoose:*:*:*:*:*:*:*:*"
                    ],
                    "modules": [
                        "DNS Transaction ID Handler"
                    ]
                }
            ],
            "descriptions": [
                {
                    "lang": "en",
                    "value": "A weakness has been identified in Cesanta Mongoose up to 7.20. The impacted element is the function mg_sendnsreq of the file /src/dns.c of the component DNS Transaction ID Handler. Executing a manipulation of the argument random can lead to insufficiently random values. The attack can be launched remotely. The attack requires a high level of complexity. The exploitability is regarded as difficult. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way."
                }
            ],
            "metrics": [
                {
                    "cvssV4_0": {
                        "version": "4.0",
                        "baseScore": 6.3,
                        "vectorString": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P",
                        "baseSeverity": "MEDIUM"
                    }
                },
                {
                    "cvssV3_1": {
                        "version": "3.1",
                        "baseScore": 3.7,
                        "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N/E:P/RL:X/RC:R",
                        "baseSeverity": "LOW"
                    }
                },
                {
                    "cvssV3_0": {
                        "version": "3.0",
                        "baseScore": 3.7,
                        "vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N/E:P/RL:X/RC:R",
                        "baseSeverity": "LOW"
                    }
                },
                {
                    "cvssV2_0": {
                        "version": "2.0",
                        "baseScore": 2.6,
                        "vectorString": "AV:N/AC:H/Au:N/C:N/I:P/A:N/E:POC/RL:ND/RC:UR"
                    }
                }
            ],
            "timeline": [
                {
                    "time": "2026-02-22T00:00:00.000Z",
                    "lang": "en",
                    "value": "Advisory disclosed"
                },
                {
                    "time": "2026-02-22T01:00:00.000Z",
                    "lang": "en",
                    "value": "VulDB entry created"
                },
                {
                    "time": "2026-02-22T09:02:36.000Z",
                    "lang": "en",
                    "value": "VulDB entry last update"
                }
            ],
            "credits": [
                {
                    "lang": "en",
                    "value": "dwbruijn (VulDB User)",
                    "type": "reporter"
                }
            ],
            "references": [
                {
                    "url": "https://vuldb.com/?id.347333",
                    "name": "VDB-347333 | Cesanta Mongoose DNS Transaction ID dns.c mg_sendnsreq random values",
                    "tags": [
                        "vdb-entry",
                        "technical-description"
                    ]
                },
                {
                    "url": "https://vuldb.com/?ctiid.347333",
                    "name": "VDB-347333 | CTI Indicators (IOB, IOC, TTP, IOA)",
                    "tags": [
                        "signature",
                        "permissions-required"
                    ]
                },
                {
                    "url": "https://vuldb.com/?submit.755304",
                    "name": "Submit #755304 | Cesanta Mongoose Embedded Web Server 7.20 Insufficiently Random Values",
                    "tags": [
                        "third-party-advisory"
                    ]
                },
                {
                    "url": "https://github.com/dwBruijn/CVEs/blob/main/Mongoose/mg_sendnsreq.md",
                    "tags": [
                        "related"
                    ]
                },
                {
                    "url": "https://github.com/dwBruijn/CVEs/blob/main/Mongoose/mg_sendnsreq.md#poc",
                    "tags": [
                        "exploit"
                    ]
                }
            ],
            "tags": [
                "x_open-source"
            ]
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-02-23T13:36:36.825692Z",
                                "id": "CVE-2026-2966",
                                "options": [
                                    {
                                        "Exploitation": "poc"
                                    },
                                    {
                                        "Automatable": "no"
                                    },
                                    {
                                        "Technical Impact": "partial"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
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                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2026-02-23T13:36:51.905Z"
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    }
}