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    "cveMetadata": {
        "cveId": "CVE-2026-14266",
        "assignerOrgId": "99f1926a-a320-47d8-bbb5-42feb611262e",
        "state": "PUBLISHED",
        "assignerShortName": "zdi",
        "dateReserved": "2026-06-30T18:43:50.027Z",
        "datePublished": "2026-07-29T17:17:13.649Z",
        "dateUpdated": "2026-07-30T03:55:31.679Z"
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                "dateUpdated": "2026-07-29T17:17:13.649Z"
            },
            "title": "7-Zip XZ Decompression Heap-based Buffer Overflow Remote Code Execution Vulnerability",
            "descriptions": [
                {
                    "lang": "en",
                    "value": "7-Zip XZ Decompression Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of 7-Zip. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.\n\nThe specific flaw exists within the processing of XZ chunked data. Crafted XZ-compressed data can trigger an overflow of a heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-30169."
                }
            ],
            "affected": [
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                    "vendor": "7-Zip",
                    "product": "7-Zip",
                    "versions": [
                        {
                            "version": "26.01",
                            "status": "affected"
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                    "defaultStatus": "unknown"
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                            "lang": "en",
                            "cweId": "CWE-122",
                            "description": "CWE-122: Heap-based Buffer Overflow",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://www.zerodayinitiative.com/advisories/ZDI-26-444/",
                    "name": "ZDI-26-444",
                    "tags": [
                        "x_research-advisory"
                    ]
                }
            ],
            "dateAssigned": "2026-06-30T18:43:50.105Z",
            "datePublic": "2026-07-15T21:47:29.811Z",
            "source": {
                "lang": "en",
                "value": "Lunbun LLC (Landon Peng)"
            },
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                        "baseScore": 7,
                        "baseSeverity": "HIGH"
                    }
                }
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        },
        "adp": [
            {
                "title": "CVE Program Container",
                "references": [
                    {
                        "url": "http://www.openwall.com/lists/oss-security/2026/07/17/12"
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                            "content": {
                                "timestamp": "2026-07-29T00:00:00+00:00",
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                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "no"
                                    },
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                                        "Technical Impact": "total"
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                                "role": "CISA Coordinator",
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                                "id": "CVE-2026-14266"
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