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MariaDB 12.1.0 < 12.1.2

🗓️ 06 Feb 2026 00:00:00Reported by TenableType 
nessus
 nessus
🔗 www.tenable.com👁 2 Views

MariaDB before 12.1.2 is affected by a MySQL Server optimizer flaw (CVE 2026 21968) causing denial of service.

Related
Refs
Code
#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
##

include('compat.inc');

if (description)
{
  script_id(298262);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/02/06");

  script_cve_id("CVE-2026-21968");

  script_name(english:"MariaDB 12.1.0 < 12.1.2");

  script_set_attribute(attribute:"synopsis", value:
"The remote database server is affected by a vulnerability.");
  script_set_attribute(attribute:"description", value:
"The version of MariaDB installed on the remote host is prior to 12.1.2. It is, therefore, affected by a vulnerability as
referenced in the 12.1.2 advisory.

  - Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). Supported
    versions that are affected are 8.0.0-8.0.44, 8.4.0-8.4.7 and 9.0.0-9.5.0. Easily exploitable vulnerability
    allows low privileged attacker with network access via multiple protocols to compromise MySQL Server.
    Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently
    repeatable crash (complete DOS) of MySQL Server. (CVE-2026-21968)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
  script_set_attribute(attribute:"see_also", value:"https://mariadb.com/docs/release-notes/community-server/12.1/12.1.2");
  script_set_attribute(attribute:"solution", value:
"Upgrade to MariaDB version 12.1.2 or later.");
  script_set_attribute(attribute:"agent", value:"all");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:N/I:N/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-21968");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"vuln_publication_date", value:"2026/01/20");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/02/06");

  script_set_attribute(attribute:"plugin_type", value:"combined");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:mariadb:mariadb");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

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

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

  script_dependencies("mysql_version.nasl", "mysql_login.nasl", "mariadb_nix_installed.nbin", "mariadb_win_installed.nbin");
  script_require_keys("installed_sw/MariaDB");

  exit(0);
}

include('vcf.inc');

var app_info = vcf::combined_get_app_info(app:'MariaDB');

vcf::check_all_backporting(app_info:app_info);

var constraints = [
  { 'min_version' : '12.1', 'fixed_version' : '12.1.2' }
];
vcf::check_version_and_report(
    app_info:app_info,
    constraints:constraints,
    require_paranoia:TRUE,
    severity:SECURITY_WARNING
);

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06 Feb 2026 00:00Current
5Medium risk
Vulners AI Score5
CVSS 3.16.5
EPSS0.00085
SSVC
2