CVE-2026-29648_CVE-2026-29648

{
    "lastseen": "",
    "description": "In OpenXiangShan NEMU, when Smstateen is enabled, clearing mstateen0.ENVCFG does not correctly restrict access to henvcfg and senvcfg. As a result, less-privileged code may read or write these CSRs without the required exception, potentially bypassing intended state-enable based isolation controls in virtualized or multi-privilege environments.",
    "published": "2026-04-20T00:00:00.000Z",
    "modified": "2026-04-21T19:50:38.197Z",
    "type": "cve",
    "title": "CVE-2026-29648",
    "source": "mitre",
    "references": "https://github.com/OpenXiangShan/NEMU/issues/690\nhttps://github.com/OpenXiangShan/XiangShan/pull/3978\nhttps://docs.riscv.org/reference/isa/priv/smstateen.html",
    "id": "CVE-2026-29648",
    "bulletinFamily": "",
    "cwe": [
        "CWE-269"
    ],
    "cvelist": null,
    "sourceData": "n/a n/a n/a",
    "sourceHref": "",
    "cvss": {
        "score": 8.8,
        "severity": "HIGH",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
        "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": "OpenXiangShan NEMU",
    "version": "n/a",
    "vendor": "OpenXiangShan",
    "ai_description": "Privilege escalation vulnerability in OpenXiangShan NEMU due to incorrect access control when Smstateen is enabled",
    "ai_severity": "High",
    "ai_vendor": "OpenXiangShan",
    "ai_product": "OpenXiangShan NEMU",
    "ai_version": "n/a",
    "ai_score": 8.8
}