{
  "crds_version": "0.1",
  "kind": "base",
  "id": "crds:cve-2025-49113",
  "revision": 1,
  "title": "Roundcube Webmail — unvalidated parameter to deserialization",
  "summary": "Roundcube Webmail before 1.5.10 and 1.6.11 does not validate one upload parameter, which a signed-in user turns into object deserialization and from there into code running on the mail server.",
  "source_type": "cve",
  "severity": "critical",
  "cvss": {
    "score": 8.8,
    "vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
    "version": "3.1"
  },
  "epss": 0.98897,
  "exploitation": {
    "known_exploited": true,
    "exploit_available": true,
    "attack_complexity": "low",
    "kev_added": "2026-02-20",
    "prerequisites": "Any authenticated webmail account."
  },
  "remediation": {
    "patch_available": true,
    "fixed_in": [
      "Roundcube Webmail 1.5.10",
      "Roundcube Webmail 1.6.11"
    ]
  },
  "mitre_attack": [
    "T1059"
  ],
  "kill_chain": "execution",
  "recommended_action": "Upgrade Roundcube to 1.5.10 or 1.6.11 now; exploitation probability is near certain, so check the server for web shells and reset every webmail session.",
  "confidence": "high",
  "provenance": [
    {
      "fields": [
        "cvss",
        "exploitation.attack_complexity",
        "exploitation.exploit_available",
        "references",
        "published_at"
      ],
      "source": "https://nvd.nist.gov/vuln/detail/CVE-2025-49113",
      "retrieved_at": "2026-09-24T08:51:39.744Z",
      "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": "2026-09-24T08:51:39.744Z",
      "confidence": "high",
      "extractor": "scrty-crds-pipeline/0.1"
    },
    {
      "fields": [
        "epss"
      ],
      "source": "https://api.first.org/data/v1/epss?cve=CVE-2025-49113",
      "retrieved_at": "2026-09-24T08:51:39.744Z",
      "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-2025-49113",
      "retrieved_at": "2026-09-24T08:51:39.744Z",
      "confidence": "high",
      "extractor": "claude-code"
    }
  ],
  "references": [
    {
      "type": "cve",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-49113",
      "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://github.com/roundcube/roundcubemail/commit/0376f69e958a8fef7f6f09e352c541b4e7729c4d"
    },
    {
      "type": "vendor_advisory",
      "url": "https://github.com/roundcube/roundcubemail/commit/7408f31379666124a39f9cb1018f62bc5e2dc695"
    },
    {
      "type": "vendor_advisory",
      "url": "https://github.com/roundcube/roundcubemail/commit/c50a07d88ca38f018a0f4a0b008e9a1deb32637e"
    }
  ],
  "published_at": "2025-06-02T05:15:53.420Z",
  "issued_at": "2026-09-24T08:51:39.744Z",
  "tags": [
    "roundcube",
    "webmail",
    "deserialization",
    "remote-code-execution",
    "kev"
  ]
}