The version of Tencent Linux installed on the remote TencentOS Server 4 host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the TSSA-2025:0152 advisory.

    Package updates are available for TencentOS Server 4 that fix the following vulnerabilities:

    CVE-2025-21559:
    Vulnerability in the MySQL Server product of Oracle MySQL (component: InnoDB).  Supported versions that     are affected are 8.0.40 and prior, 8.4.3 and prior and  9.1.0 and prior. Easily exploitable vulnerability     allows high 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 as well as  unauthorized update, insert or delete access     to some of MySQL Server accessible data. CVSS 3.1 Base Score 5.5 (Integrity and Availability impacts).
    CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H).

    CVE-2025-21555:
    Vulnerability in the MySQL Server product of Oracle MySQL (component: InnoDB).  Supported versions that     are affected are 8.0.40 and prior, 8.4.3 and prior and  9.1.0 and prior. Easily exploitable vulnerability     allows high 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 as well as  unauthorized update, insert or delete access     to some of MySQL Server accessible data. CVSS 3.1 Base Score 5.5 (Integrity and Availability impacts).
    CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H).

    CVE-2025-21546:
    Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Security: Privileges).
    Supported versions that are affected are 8.0.40 and prior, 8.4.3 and prior and  9.1.0 and prior. Easily     exploitable vulnerability allows high privileged attacker with network access via multiple protocols to     compromise MySQL Server.  Successful attacks of this vulnerability can result in  unauthorized update,     insert or delete access to some of MySQL Server accessible data as well as  unauthorized read access to a     subset of MySQL Server accessible data. CVSS 3.1 Base Score 3.8 (Confidentiality and Integrity impacts).
    CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N).

    CVE-2025-21543:
    Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Packaging).  Supported     versions that are affected are 8.0.40 and prior, 8.4.3 and prior and  9.1.0 and prior. Easily exploitable     vulnerability allows high 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. CVSS 3.1 Base Score 4.9 (Availability     impacts).  CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).

    CVE-2025-21540:
    Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Security: Privileges).
    Supported versions that are affected are 8.0.40 and prior, 8.4.3 and prior and  9.1.0 and prior. 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 update,     insert or delete access to some of MySQL Server accessible data as well as  unauthorized read access to a     subset of MySQL Server accessible data. CVSS 3.1 Base Score 5.4 (Confidentiality and Integrity impacts).
    CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N).

    CVE-2025-21531:
    Vulnerability in the MySQL Server product of Oracle MySQL (component: InnoDB).  Supported versions that     are affected are 8.0.40 and prior, 8.4.3 and prior and  9.1.0 and prior. Easily exploitable vulnerability     allows high 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. CVSS 3.1 Base Score 4.9 (Availability impacts).  CVSS     Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).

    CVE-2025-21529:
    Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Information Schema).
    Supported versions that are affected are 8.0.40 and prior, 8.4.3 and prior and  9.1.0 and prior. Easily     exploitable vulnerability allows high 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. CVSS 3.1 Base Score 4.9     (Availability impacts).  CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).

    CVE-2025-21523:
    Vulnerability in the MySQL Server product of Oracle MySQL (component: InnoDB).  Supported versions that     are affected are 8.0.40 and prior, 8.4.3 and prior and  9.1.0 and prior. Easily exploitable vulnerability     allows high 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. CVSS 3.1 Base Score 4.9 (Availability impacts).  CVSS     Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).

    CVE-2025-21522:
    Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Parser).  Supported versions     that are affected are 8.0.40 and prior, 8.4.3 and prior and  9.1.0 and prior. 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. CVSS 3.1 Base Score 6.5 (Availability     impacts).  CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H).

    CVE-2025-21520:
    Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Options).  Supported     versions that are affected are 8.0.40 and prior, 8.4.3 and prior and  9.1.0 and prior. Difficult to     exploit vulnerability allows high privileged attacker with logon to the infrastructure where MySQL Server     executes to compromise MySQL Server.  Successful attacks require human interaction from a person other     than the attacker. Successful attacks of this vulnerability can result in  unauthorized read access to a     subset of MySQL Server accessible data. CVSS 3.1 Base Score 1.8 (Confidentiality impacts).  CVSS Vector:
    (CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:L/I:N/A:N).

    CVE-2025-21519:
    Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Security: Privileges).
    Supported versions that are affected are 8.0.40 and prior, 8.4.3 and prior and  9.1.0 and prior. Difficult     to exploit vulnerability allows high 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. CVSS 3.1 Base Score 4.4     (Availability impacts).  CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H).

    CVE-2025-21518:
    Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer).  Supported     versions that are affected are 8.0.40 and prior, 8.4.3 and prior and  9.1.0 and prior. 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. CVSS 3.1 Base Score 6.5 (Availability     impacts).  CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H).

    CVE-2025-21505:
    Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Components Services).
    Supported versions that are affected are 8.0.40 and prior, 8.4.3 and prior and  9.1.0 and prior. Easily     exploitable vulnerability allows high 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. CVSS 3.1 Base Score 4.9     (Availability impacts).  CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).

    CVE-2025-21503:
    Vulnerability in the MySQL Server product of Oracle MySQL (component: InnoDB).  Supported versions that     are affected are 8.0.40 and prior, 8.4.3 and prior and  9.1.0 and prior. Easily exploitable vulnerability     allows high 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. CVSS 3.1 Base Score 4.9 (Availability impacts).  CVSS     Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).

    CVE-2025-21501:
    Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer).  Supported     versions that are affected are 8.0.40 and prior, 8.4.3 and prior and  9.1.0 and prior. 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. CVSS 3.1 Base Score 6.5 (Availability     impacts).  CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H).

    CVE-2025-21500:
    Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer).  Supported     versions that are affected are 8.0.40 and prior, 8.4.3 and prior and  9.1.0 and prior. 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. CVSS 3.1 Base Score 6.5 (Availability     impacts).  CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H).

    CVE-2025-21497:
    Vulnerability in the MySQL Server product of Oracle MySQL (component: InnoDB).  Supported versions that     are affected are 8.0.40 and prior, 8.4.3 and prior and  9.1.0 and prior. Easily exploitable vulnerability     allows high 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 as well as  unauthorized update, insert or delete access     to some of MySQL Server accessible data. CVSS 3.1 Base Score 5.5 (Integrity and Availability impacts).
    CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H).

    CVE-2025-21491:
    Vulnerability in the MySQL Server product of Oracle MySQL (component: InnoDB).  Supported versions that     are affected are 8.0.40 and prior, 8.4.3 and prior and  9.1.0 and prior. Easily exploitable vulnerability     allows high 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. CVSS 3.1 Base Score 4.9 (Availability impacts).  CVSS     Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).

    CVE-2025-21490:
    Vulnerability in the MySQL Server product of Oracle MySQL (component: InnoDB).  Supported versions that     are affected are 8.0.40 and prior, 8.4.3 and prior and  9.1.0 and prior. Easily exploitable vulnerability     allows high 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. CVSS 3.1 Base Score 4.9 (Availability impacts).  CVSS     Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).

Tenable has extracted the preceding description block directly from the Tencent Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Detections

Analytics

TencentOS Server 4: mysql (TSSA-2025:0152)

medium Nessus Plugin ID 239761

Version 1.2

Version 1.1

Version 1.2 Nov 21, 2025, 2:12 PM CVE (set "CVE" coverage to "CVE-2025-21490,CVE-2025-21491,CVE-2025-21497,CVE-2025-21500,CVE-2025-21501,CVE-2025-21503,CVE-2025-21505,CVE-2025-21518,CVE-2025-21519,CVE-2025-21520,CVE-2025-21522,CVE-2025-21523,CVE-2025-21529,CVE-2025-21531,CVE-2025-21540,CVE-2025-21543,CVE-2025-21546,CVE-2025-21555,CVE-2025-21559") CVSS metrics ("CVSSv2 score" set to 6.8) CVSS metrics ("CVSSv2 vector" set to "CVSS2#AV:N/AC:L/Au:M/C:N/I:P/A:C") CVSS metrics ("CVSSv3 score" set to 5.5) CVSS metrics ("CVSSv3 vector" set to "CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H") CVSS temporal metrics ("CVSSv2 temporal vector" set to "CVSS2#E:U/RL:OF/RC:C") CVSS temporal metrics ("CVSSv3 temporal vector" set to "CVSS:3.0/E:U/RL:O/RC:C") CVSSv2 score source (set to "CVE-2025-21559") CVSSv2 severity (based on CVE-2025-21559, severity decreased from "High" to "Medium") CVSSv3 severity (based on None, severity decreased from "High" to "Medium") Detection (updated detection logic) Plugin metadata Plugin Feed: 202511211412
Version 1.1 Jun 17, 2025, 2:02 AM New Plugin Feed: 202506170202