{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-45798",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-05-13T08:19:32.603Z",
        "datePublished": "2026-08-19T16:20:54.636Z",
        "dateUpdated": "2026-08-19T17:20:26.591Z"
    },
    "containers": {
        "cna": {
            "title": "Wazuh: Pre-auth stack-buffer-overflow in compare_wazuh_versions reachable from wazuh-authd (TCP/1515) via crafted enrollment V: field",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-121",
                            "lang": "en",
                            "description": "CWE-121: Stack-based Buffer Overflow",
                            "type": "CWE"
                        }
                    ]
                },
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-170",
                            "lang": "en",
                            "description": "CWE-170: Improper Null Termination",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "LOW",
                        "attackVector": "NETWORK",
                        "availabilityImpact": "HIGH",
                        "baseScore": 7.5,
                        "baseSeverity": "HIGH",
                        "confidentialityImpact": "NONE",
                        "integrityImpact": "NONE",
                        "privilegesRequired": "NONE",
                        "scope": "UNCHANGED",
                        "userInteraction": "NONE",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                        "version": "3.1"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/wazuh/wazuh/security/advisories/GHSA-4fvp-jfc3-qr6r",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/wazuh/wazuh/security/advisories/GHSA-4fvp-jfc3-qr6r"
                },
                {
                    "name": "https://github.com/wazuh/wazuh/pull/36059",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/wazuh/wazuh/pull/36059"
                },
                {
                    "name": "https://github.com/wazuh/wazuh/commit/b6aac379982d6144b8da38450cbea6c8dc15be44",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/wazuh/wazuh/commit/b6aac379982d6144b8da38450cbea6c8dc15be44"
                },
                {
                    "name": "https://github.com/wazuh/wazuh/releases/tag/v4.14.6",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/wazuh/wazuh/releases/tag/v4.14.6"
                },
                {
                    "name": "https://github.com/wazuh/wazuh/releases/tag/v5.0.0-beta2",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/wazuh/wazuh/releases/tag/v5.0.0-beta2"
                }
            ],
            "affected": [
                {
                    "vendor": "wazuh",
                    "product": "wazuh",
                    "versions": [
                        {
                            "version": ">= 4.5.0, < 4.14.6",
                            "status": "affected"
                        },
                        {
                            "version": ">= 5.0.0-beta1, < 5.0.0-beta2",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-08-19T16:20:54.636Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "Wazuh is a free and open source platform used for threat prevention, detection, and response. From 4.5.0 until 4.14.6 and 5.0.0-beta2, compare_wazuh_versions() in src/shared/version_op.c copies the attacker-controlled enrollment V: field into a 10-byte stack buffer with strncpy() but does not explicitly terminate the buffer. The function is reachable before authentication through wazuh-authd on TCP port 1515 when anonymous TLS enrollment is enabled. A version string of at least nine non-null bytes can cause strchr() and strtok() to read beyond ver2 and can make strtok() write a null byte into adjacent stack memory, allowing a remote denial of service. This issue is fixed in versions 4.14.6 and 5.0.0-beta2."
                }
            ],
            "source": {
                "advisory": "GHSA-4fvp-jfc3-qr6r",
                "discovery": "UNKNOWN"
            }
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-08-19T17:17:27.587788Z",
                                "id": "CVE-2026-45798",
                                "options": [
                                    {
                                        "Exploitation": "poc"
                                    },
                                    {
                                        "Automatable": "yes"
                                    },
                                    {
                                        "Technical Impact": "partial"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2026-08-19T17:20:26.591Z"
                }
            }
        ]
    }
}