{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-18238",
        "assignerOrgId": "cfdbb673-b408-4d03-89c1-c3d73ed80896",
        "state": "PUBLISHED",
        "assignerShortName": "Tcpdump",
        "dateReserved": "2026-07-29T13:32:44.322Z",
        "datePublished": "2026-09-05T18:51:57.956Z",
        "dateUpdated": "2026-09-08T15:17:19.641Z"
    },
    "containers": {
        "cna": {
            "affected": [
                {
                    "defaultStatus": "unaffected",
                    "modules": [
                        "remote packet capture client"
                    ],
                    "product": "libpcap",
                    "programFiles": [
                        "pcap-rpcap.c"
                    ],
                    "programRoutines": [
                        {
                            "name": "pcap_read_nocb_remote()"
                        }
                    ],
                    "repo": "https://github.com/the-tcpdump-group/libpcap/",
                    "vendor": "The Tcpdump Group",
                    "versions": [
                        {
                            "status": "affected",
                            "version": "1.8.x"
                        },
                        {
                            "status": "affected",
                            "version": "1.9.x"
                        },
                        {
                            "lessThan": "1.10.7",
                            "status": "affected",
                            "version": "1.10.x",
                            "versionType": "semver"
                        }
                    ]
                }
            ],
            "configurations": [
                {
                    "lang": "en",
                    "value": "The problem is specific to the remote packet capture code, which is not enabled in the default build configuration."
                }
            ],
            "descriptions": [
                {
                    "lang": "en",
                    "value": "The rpcap client code that processes a RPCAP_MSG_PACKET message received from the server incorrectly validates its headers.  A malicious server can send a crafted message and cause the client to treat up to 20 bytes of the client process memory beyond the end of the buffer as if it was a part of the captured packet."
                }
            ],
            "exploits": [
                {
                    "lang": "en",
                    "value": "A functional exploit exists."
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "LOW",
                        "attackVector": "NETWORK",
                        "availabilityImpact": "NONE",
                        "baseScore": 5,
                        "baseSeverity": "MEDIUM",
                        "confidentialityImpact": "LOW",
                        "integrityImpact": "NONE",
                        "privilegesRequired": "LOW",
                        "scope": "CHANGED",
                        "userInteraction": "NONE",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N",
                        "version": "3.1"
                    },
                    "format": "CVSS",
                    "scenarios": [
                        {
                            "lang": "en",
                            "value": "GENERAL"
                        }
                    ]
                }
            ],
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-1288",
                            "description": "CWE-1288: Improper Validation of Consistency within Input",
                            "lang": "en",
                            "type": "CWE"
                        }
                    ]
                },
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-126",
                            "description": "CWE-126 Buffer Over-read",
                            "lang": "en",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "cfdbb673-b408-4d03-89c1-c3d73ed80896",
                "shortName": "Tcpdump",
                "dateUpdated": "2026-09-05T18:51:57.956Z"
            },
            "references": [
                {
                    "tags": [
                        "patch"
                    ],
                    "url": "https://github.com/the-tcpdump-group/libpcap/commit/b9590d482986d64673712460aae1d48d11fa0473"
                }
            ],
            "solutions": [
                {
                    "lang": "en",
                    "value": "Upgrade to libpcap 1.10.7."
                }
            ],
            "source": {
                "discovery": "EXTERNAL"
            },
            "title": "OOBR in rpcap client in libpcap before 1.10.7",
            "x_generator": {
                "engine": "cvelib 1.8.0"
            }
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-09-08T15:17:08.655802Z",
                                "id": "CVE-2026-18238",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "no"
                                    },
                                    {
                                        "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": "2026-09-08T15:17:19.641Z"
                }
            }
        ]
    }
}