Static buffer overflow in deprecated nis_local_principal_CVE-2026-5358

{
    "lastseen": "",
    "description": "The obsolete nis_local_principal function in the GNU C Library version 2.43 and older may overflow a buffer in the data section, which could allow an attacker to spoof a crafted response to a UDP request generated by this function and overwrite neighboring static data in the requesting application.\n\nNIS support is obsolete and has been deprecated in the GNU C Library since version 2.26 and is only maintained for legacy usage. Applications should port away from NIS to more modern identity and access management services.",
    "published": "2026-04-20T20:37:23.178Z",
    "modified": "2026-04-21T19:50:06.251Z",
    "type": "cve",
    "title": "Static buffer overflow in deprecated nis_local_principal",
    "source": "glibc",
    "references": "https://sourceware.org/bugzilla/show_bug.cgi?id=34067",
    "id": "CVE-2026-5358",
    "bulletinFamily": "",
    "cwe": [
        "CWE-120"
    ],
    "cvelist": null,
    "sourceData": "The GNU C Library glibc 0",
    "sourceHref": "",
    "cvss": {
        "score": 9.1,
        "severity": "CRITICAL",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/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": "glibc",
    "version": "2.43 and older",
    "vendor": "The GNU Project",
    "ai_description": "Static buffer overflow in deprecated nis_local_principal function",
    "ai_severity": "Critical",
    "ai_vendor": "The GNU Project",
    "ai_product": "GNU C Library",
    "ai_version": "2.43 and older",
    "ai_score": 9.1
}