{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-81878",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-08-27T17:48:42.122Z",
        "datePublished": "2026-09-22T15:07:45.225Z",
        "dateUpdated": "2026-09-22T17:55:51.200Z"
    },
    "containers": {
        "cna": {
            "title": "radare2: Integer overflow causes heap out-of-bounds write in radare2 PYC parser",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-190",
                            "lang": "en",
                            "description": "CWE-190: Integer Overflow or Wraparound",
                            "type": "CWE"
                        }
                    ]
                },
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-787",
                            "lang": "en",
                            "description": "CWE-787: Out-of-bounds Write",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "LOW",
                        "attackVector": "LOCAL",
                        "availabilityImpact": "HIGH",
                        "baseScore": 5.5,
                        "baseSeverity": "MEDIUM",
                        "confidentialityImpact": "NONE",
                        "integrityImpact": "NONE",
                        "privilegesRequired": "NONE",
                        "scope": "UNCHANGED",
                        "userInteraction": "REQUIRED",
                        "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
                        "version": "3.1"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/radareorg/radare2/security/advisories/GHSA-9phv-v2w8-56j3",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/radareorg/radare2/security/advisories/GHSA-9phv-v2w8-56j3"
                },
                {
                    "name": "https://github.com/radareorg/radare2/issues/26222",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/radareorg/radare2/issues/26222"
                },
                {
                    "name": "https://github.com/radareorg/radare2/pull/26177",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/radareorg/radare2/pull/26177"
                },
                {
                    "name": "https://github.com/radareorg/radare2/commit/6727454b666b28c33837b219a5f91136461357c0",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/radareorg/radare2/commit/6727454b666b28c33837b219a5f91136461357c0"
                },
                {
                    "name": "https://github.com/radareorg/radare2/releases/tag/6.2.0",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/radareorg/radare2/releases/tag/6.2.0"
                }
            ],
            "affected": [
                {
                    "vendor": "radareorg",
                    "product": "radare2",
                    "versions": [
                        {
                            "version": "< 6.2.0",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-09-22T15:07:45.225Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "radare2 is a UNIX-like reverse engineering framework and command-line toolset. Prior to 6.2.0, radare2's CPython bytecode .pyc marshal parser was vulnerable because the CPython marshal readers accepted a 32-bit string length without rejecting values that overflow the size-plus-one allocation. The vulnerability is triggered by opening or inspecting a crafted .pyc file through r2 or rabin2. A length of 0xffffffff wrapped the allocation to zero before the common byte reader wrote attacker-controlled data and fill bytes beyond the heap allocation. This can cause heap memory corruption and denial of service; arbitrary code execution is possible but has not been demonstrated. This issue is fixed in version 6.2.0."
                }
            ],
            "source": {
                "advisory": "GHSA-9phv-v2w8-56j3",
                "discovery": "UNKNOWN"
            }
        },
        "adp": [
            {
                "references": [
                    {
                        "url": "https://github.com/radareorg/radare2/issues/26222",
                        "tags": [
                            "exploit"
                        ]
                    }
                ],
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-09-22T17:54:59.836434Z",
                                "id": "CVE-2026-81878",
                                "options": [
                                    {
                                        "Exploitation": "poc"
                                    },
                                    {
                                        "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": "2026-09-22T17:55:51.200Z"
                }
            }
        ]
    }
}