GHSL-2026-122 7-Zip Ar SYMDEF OOB Read_CVE-2026-48112

{
    "lastseen": "",
    "description": "7-Zip is a file archiver with a high compression ratio. Versions 9.18 through 26.00 contain a heap out-of-bounds read in 7-Zip Ar handler BSD SYMDEF parser. A 4-byte heap out-of-bounds read exists in the Unix ar archive parser in 7-Zip. When parsing a BSD-style __.SYMDEF symbol table, the ParseLibSymbols function reads a 32-bit namesSize field via Get32 at a position that can equal the buffer size, reading 4 bytes past the end of the heap allocation. This reads uninitialized heap data under the default allocator. Version 26.01 patches the issue.",
    "published": "2026-06-05T16:20:19.633Z",
    "modified": "2026-06-05T16:20:19.633Z",
    "type": "cve",
    "title": "GHSL-2026-122 7-Zip Ar SYMDEF OOB Read",
    "source": "GitHub_M",
    "references": "https://securitylab.github.com/advisories/GHSL-2026-115_GHSL-2026-122_7-zip/",
    "id": "CVE-2026-48112",
    "bulletinFamily": "",
    "cwe": [
        "CWE-190",
        "CWE-125"
    ],
    "cvelist": null,
    "sourceData": "mcmilk 7-Zip >= 9.34, < 26.01",
    "sourceHref": "",
    "cvss": {
        "score": 6.5,
        "severity": "MEDIUM",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "7-Zip",
    "version": ">= 9.34, < 26.01",
    "vendor": "mcmilk",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}