{
    "id": "CVE-2026-87886",
    "published": "2026-09-17 23:18:53",
    "last_modified": "2026-09-18 19:29:35",
    "cvss_score": "7.8",
    "cvss_severity": "HIGH",
    "cvss_version": "3.0",
    "cvss_vector": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
    "cwe": "CWE-276",
    "description": "Local privilege escalation due to insecure file permissions. The following products are affected: Acronis Backup plugin for cPanel & WHM (Linux) before build 1.9.3.1021, Acronis Backup extension for Plesk (Linux) before build 1.8.11.638, Acronis Backup plugin for DirectAdmin (Linux) before build 1.2.3.238.",
    "epss_score": "0.00233",
    "epss_percentile": "0.12771",
    "kev": 1,
    "kev_due": "2026-09-19",
    "has_exploit": 0,
    "updated_at": "2026-09-27 18:18:04",
    "priority": {
        "rank": 1,
        "label": "Patch first",
        "why": "On CISA KEV — known exploited in the wild, due 2026-09-19."
    },
    "products": [
        {
            "vendor": "acronis",
            "product": "acronis_backup"
        },
        {
            "vendor": "linux",
            "product": "linux_kernel"
        }
    ],
    "kev_detail": {
        "cve_id": "CVE-2026-87886",
        "date_added": "2026-09-16",
        "due_date": "2026-09-19",
        "vendor": "Acronis",
        "product": "Backup",
        "name": "Acronis Backup Incorrect Default Permissions Vulnerability",
        "ransomware": 0
    },
    "exploits": [],
    "refs_list": [
        "https://security-advisory.acronis.com/advisories/SEC-10986",
        "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-87886"
    ]
}