{
  "crds_version": "0.1",
  "kind": "base",
  "id": "crds:cve-2026-87886",
  "revision": 1,
  "title": "Acronis Backup Panel Plugins — Local Privilege Escalation via File Permissions",
  "summary": "The Acronis Backup plugins for cPanel, Plesk and DirectAdmin on Linux ship files with insecure permissions. A user with a low-privilege local account can abuse them to escalate privileges on the hosting server. Exploited in the wild.",
  "source_type": "cve",
  "severity": "high",
  "cvss": {
    "score": 7.8,
    "vector": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
    "version": "3.0"
  },
  "epss": 0.00254,
  "exploitation": {
    "known_exploited": true,
    "exploit_available": false,
    "attack_complexity": "low",
    "kev_added": "2026-09-16",
    "prerequisites": "A low-privilege local account on the Linux hosting server running the plugin"
  },
  "remediation": {
    "patch_available": true,
    "fixed_in": [
      "Acronis Backup plugin for cPanel & WHM (Linux) build 1.9.3.1021",
      "Acronis Backup extension for Plesk (Linux) build 1.8.11.638",
      "Acronis Backup plugin for DirectAdmin (Linux) build 1.2.3.238"
    ]
  },
  "mitre_attack": [
    "T1068"
  ],
  "kill_chain": "privilege_escalation",
  "recommended_action": "Update the Acronis Backup plugin on every cPanel, Plesk and DirectAdmin host to the fixed build, and review those hosts for signs of local compromise.",
  "confidence": "medium",
  "provenance": [
    {
      "fields": [
        "cvss",
        "exploitation.attack_complexity",
        "exploitation.exploit_available",
        "references",
        "published_at"
      ],
      "source": "https://nvd.nist.gov/vuln/detail/CVE-2026-87886",
      "retrieved_at": "2026-09-20T10:52:56.734Z",
      "confidence": "high",
      "extractor": "scrty-crds-pipeline/0.1"
    },
    {
      "fields": [
        "exploitation.known_exploited",
        "exploitation.kev_added"
      ],
      "source": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "retrieved_at": "2026-09-20T10:52:56.734Z",
      "confidence": "high",
      "extractor": "scrty-crds-pipeline/0.1"
    },
    {
      "fields": [
        "epss"
      ],
      "source": "https://api.first.org/data/v1/epss?cve=CVE-2026-87886",
      "retrieved_at": "2026-09-20T10:52:56.734Z",
      "confidence": "high",
      "extractor": "scrty-crds-pipeline/0.1"
    },
    {
      "fields": [
        "title",
        "summary",
        "severity",
        "remediation",
        "mitre_attack",
        "kill_chain",
        "recommended_action",
        "confidence",
        "tags",
        "exploitation.prerequisites"
      ],
      "source": "https://nvd.nist.gov/vuln/detail/CVE-2026-87886",
      "retrieved_at": "2026-09-20T10:52:56.734Z",
      "confidence": "high",
      "extractor": "claude-code"
    },
    {
      "fields": [
        "title"
      ],
      "source": "https://nvd.nist.gov/vuln/detail/CVE-2026-87886",
      "retrieved_at": "2026-09-20T11:09:51.520Z",
      "confidence": "high",
      "extractor": "human"
    }
  ],
  "references": [
    {
      "type": "cve",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-87886",
      "label": "NVD record"
    },
    {
      "type": "cisa",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "label": "CISA Known Exploited Vulnerabilities catalog"
    },
    {
      "type": "vendor_advisory",
      "url": "https://security-advisory.acronis.com/advisories/SEC-10986"
    }
  ],
  "published_at": "2026-09-17T23:18:53.763Z",
  "issued_at": "2026-09-20T10:52:56.734Z",
  "tags": [
    "acronis-backup",
    "cpanel",
    "plesk",
    "directadmin",
    "linux",
    "privilege-escalation",
    "insecure-permissions"
  ]
}