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    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-115863",
        "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "state": "PUBLISHED",
        "assignerShortName": "mitre",
        "dateReserved": "2026-10-23T17:35:18.141Z",
        "datePublished": "2026-10-23T17:35:18.517Z",
        "dateUpdated": "2026-10-23T17:35:18.517Z"
    },
    "containers": {
        "cna": {
            "affected": [
                {
                    "defaultStatus": "unknown",
                    "product": "ConnMan",
                    "vendor": "ConnMan",
                    "versions": [
                        {
                            "lessThanOrEqual": "2.0",
                            "status": "affected",
                            "version": "0",
                            "versionType": "custom"
                        }
                    ]
                }
            ],
            "descriptions": [
                {
                    "lang": "en",
                    "value": "ConnMan through 2.0 has a stack-based buffer overflow via a DHCPv6 Reply message. This occurs in get_domains in gdhcp/client.c. It copies a fixed NS_MAXDNAME (1025) bytes from a DHCPv6 DOMAIN_LIST (option 24) value into a 1026-byte stack buffer dns_name regardless of the actual option length, then walks DNS labels with an unbounded \"c += jump + 1\" loop. A crafted DHCPv6 REPLY with a DOMAIN_LIST option of >= 1025 non-zero bytes makes the label walk leave the buffer and read/write '.' past its end in attacker-chosen strides. An on-link attacker can trigger this without authentication via a forged Router Advertisement (O=1) and a forged DHCPv6 REPLY matching xid/CLIENTID with a long DOMAIN_LIST. The impact is unauthenticated on-link crash of connmand (runs as root). This was introduced in bb06c47."
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "LOW",
                        "attackVector": "ADJACENT_NETWORK",
                        "availabilityImpact": "HIGH",
                        "baseScore": 7.6,
                        "baseSeverity": "HIGH",
                        "confidentialityImpact": "LOW",
                        "integrityImpact": "LOW",
                        "privilegesRequired": "NONE",
                        "scope": "UNCHANGED",
                        "userInteraction": "NONE",
                        "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H",
                        "version": "3.1"
                    },
                    "format": "CVSS",
                    "scenarios": [
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                            "lang": "en",
                            "value": "GENERAL"
                        }
                    ]
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            ],
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-121",
                            "description": "CWE-121 Stack-based Buffer Overflow",
                            "lang": "en",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
                "shortName": "mitre",
                "dateUpdated": "2026-10-23T17:35:18.517Z"
            },
            "references": [
                {
                    "tags": [
                        "third-party-advisory"
                    ],
                    "url": "https://lore.kernel.org/connman/179274561161.81299.4579745057858200074@pm.me/"
                },
                {
                    "tags": [
                        "product"
                    ],
                    "url": "https://git.kernel.org/pub/scm/network/connman/connman.git/tree/gdhcp/client.c"
                },
                {
                    "tags": [
                        "product"
                    ],
                    "url": "https://git.kernel.org/pub/scm/network/connman/connman.git/commit/?id=bb06c47101ca243fa5c04fb4b03fe2a12420d280"
                }
            ],
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}