{
  "id": "CVE-2023-2868",
  "url": "https://spydr.io/cve/CVE-2023-2868",
  "published": "2023-05-24T19:15:09.363Z",
  "modified": "2026-06-17T05:53:39.770Z",
  "score": 9.8,
  "severity": "critical",
  "cvss_version": "3.1",
  "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
  "score_source": "NVD",
  "epss": 0.87691,
  "epss_percentile": 0.99758,
  "exploited": true,
  "kev": {
    "added": "2023-05-26",
    "due": "2023-06-16",
    "action": "Apply updates per vendor instructions.",
    "ransomware": "Unknown",
    "name": "Barracuda Networks ESG Appliance Improper Input Validation Vulnerability",
    "notes": "https://status.barracuda.com/incidents/34kx82j5n4q9; https://nvd.nist.gov/vuln/detail/CVE-2023-2868"
  },
  "ssvc_exploitation": "active",
  "vendors": [
    "Barracuda"
  ],
  "products": [
    "Barracuda Email Security Gateway"
  ],
  "cwes": [
    "CWE-20",
    "CWE-77"
  ],
  "description": "A remote command injection vulnerability exists in the Barracuda Email Security Gateway (appliance form factor only) product effecting versions 5.1.3.001-9.2.0.006. The vulnerability arises out of a failure to comprehensively sanitize the processing of .tar file (tape archives). The vulnerability stems from incomplete input validation of a user-supplied .tar file as it pertains to the names of the files contained within the archive. As a consequence, a remote attacker can specifically format these file names in a particular manner that will result in remotely executing a system command through Perl's qx operator with the privileges of the Email Security Gateway product. This issue was fixed as part of BNSF-36456 patch. This patch was automatically applied to all customer appliances.",
  "status": "Analyzed",
  "score_type": "Primary",
  "scores": {
    "cvss_v40": null,
    "cvss_v31": 9.8,
    "cvss_v30": null
  },
  "references": [
    {
      "url": "https://status.barracuda.com/incidents/34kx82j5n4q9",
      "tags": [
        "Vendor Advisory"
      ]
    },
    {
      "url": "https://www.barracuda.com/company/legal/esg-vulnerability",
      "tags": [
        "Mitigation",
        "Vendor Advisory"
      ]
    },
    {
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-2868",
      "tags": [
        "US Government Resource"
      ]
    }
  ],
  "nvd_url": "https://nvd.nist.gov/vuln/detail/CVE-2023-2868",
  "covered_in": [],
  "attribution": [
    {
      "source": "NVD",
      "url": "https://nvd.nist.gov",
      "notice": "This product uses data from the NVD API but is not endorsed or certified by the NVD."
    },
    {
      "source": "CISA KEV",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "notice": "Known exploited vulnerabilities from the CISA KEV catalog."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss",
      "notice": "Exploit prediction scores from FIRST EPSS."
    }
  ]
}