Veeam Backup and Replication 12.x < 12.3.2.4165 Multiple Vulnerabilities (October 2025) (KB4771)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
##

include('compat.inc');

if (description)
{
  script_id(270695);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/01/21");

  script_cve_id("CVE-2025-48983", "CVE-2025-48984");
  script_xref(name:"IAVA", value:"2025-A-0742-S");

  script_name(english:"Veeam Backup and Replication 12.x < 12.3.2.4165 Multiple Vulnerabilities (October 2025) (KB4771)");

  script_set_attribute(attribute:"synopsis", value:
"The version of Veeam Backup and Replication installed on the remote Windows host is affected by multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The version of Veeam Backup and Replication installed on the remote Windows host is 12.x prior to 12.3.2.4165. It is,
therefore, affected by multiple vulnerabilities:

  - A vulnerability in the Mount service of Veeam Backup & Replication, which allows for remote code execution
    (RCE) on the Backup infrastructure hosts by an authenticated domain user. (CVE-2025-48983)

  - A vulnerability allowing remote code execution (RCE) on the Backup Server by an authenticated domain user.
    (CVE-2025-48984)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version
number.");
  script_set_attribute(attribute:"see_also", value:"https://www.veeam.com/kb4771");
  script_set_attribute(attribute:"see_also", value:"https://www.veeam.com/kb4696");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Veeam Backup and Replication version 12.3.2.4165 or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2025-48983");
  script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2025-48983");

  script_set_attribute(attribute:"vuln_publication_date", value:"2025/10/14");
  script_set_attribute(attribute:"patch_publication_date", value:"2025/10/14");
  script_set_attribute(attribute:"plugin_publication_date", value:"2025/10/17");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:veeam:backup_and_replication");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_set_attribute(attribute:"thorough_tests", value:"true");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Windows");

  script_copyright(english:"This script is Copyright (C) 2025-2026 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("veeam_backup_and_replication_win_installed.nbin");
  script_require_keys("SMB/Registry/Enumerated", "installed_sw/Veeam Backup and Replication");

  exit(0);
}

include('vdf.inc');

# @tvdl-content
var vuln_data = {
  'metadata': {'spec_version': '1.0'},
  'requires': [
    {'scope': 'target', 'match': {'os': 'windows'}}
  ],
  'checks': [
    {
      'product': {'name': 'Veeam Backup and Replication', 'type': 'app'},
      'check_algorithm': 'default',
      'constraints': [
        {'min_version':'12.0', 'max_version':'12.3.2.3617', 'fixed_version':'12.3.2.4165'}
      ]
    }
  ]
};

var result = vdf::check_and_report(vuln_data:vuln_data, severity:SECURITY_HOLE);
vdf::handle_check_and_report_errors(vdf_result:result);