A flaw was found in Samba, in the vfs_streams_xattr module, where uninitialized heap memory could be written into alternate data streams. This allows an authenticated user to read residual memory content that may include sensitive data, resulting in an information disclosure vulnerability.

According to the versions of the samba packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities :

    A vulnerability has been found in Samba (File Transfer Software) (the affected version is unknown) and     classified as critical.The CWE definition for the vulnerability is CWE-77. The product constructs all or     part of a command using externally-influenced input from an upstream component, but it does not neutralize     or incorrectly neutralizes special elements that could modify the intended command when it is sent to a     downstream component.As an impact it is known to affect confidentiality, integrity, and availability.There     is no information about possible countermeasures known. It may be suggested to replace the affected object     with an alternative product.(CVE-2025-10230)

    A flaw was found in Samba, in the vfs_streams_xattr module, where uninitialized heap memory could be     written into alternate data streams. This allows an authenticated user to read residual memory content     that may include sensitive data, resulting in an information disclosure vulnerability.(CVE-2025-9640)

Tenable has extracted the preceding description block directly from the EulerOS Virtualization samba security advisory.

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

According to the versions of the samba packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

    A vulnerability has been found in Samba (File Transfer Software) (the affected version is unknown) and     classified as critical.The CWE definition for the vulnerability is CWE-77. The product constructs all or     part of a command using externally-influenced input from an upstream component, but it does not neutralize     or incorrectly neutralizes special elements that could modify the intended command when it is sent to a     downstream component.As an impact it is known to affect confidentiality, integrity, and availability.There     is no information about possible countermeasures known. It may be suggested to replace the affected object     with an alternative product.(CVE-2025-10230)

    A flaw was found in Samba, in the vfs_streams_xattr module, where uninitialized heap memory could be     written into alternate data streams. This allows an authenticated user to read residual memory content     that may include sensitive data, resulting in an information disclosure vulnerability.(CVE-2025-9640)

Tenable has extracted the preceding description block directly from the EulerOS samba security advisory.

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

The remote Debian 11 host has packages installed that are affected by a vulnerability as referenced in the dla-4384 advisory.

    - -------------------------------------------------------------------------     Debian LTS Advisory DLA-4384-1                debian-lts@lists.debian.org     https://www.debian.org/lts/security/                      Paride Legovini     November 26, 2025                             https://wiki.debian.org/LTS
    - -------------------------------------------------------------------------

    Package        : samba     Version        : 2:4.13.13+dfsg-1~deb11u7     CVE ID         : CVE-2025-9640

    A flaw was found in Samba, in the vfs_streams_xattr module, where uninitialized     heap memory could be written into alternate data streams. This allows an     authenticated user to read residual memory content that may include sensitive     data, resulting in an information disclosure vulnerability.

    For Debian 11 bullseye, this problem has been fixed in version     2:4.13.13+dfsg-1~deb11u7.

    We recommend that you upgrade your samba packages.

    For the detailed security status of samba please refer to     its security tracker page at:
    https://security-tracker.debian.org/tracker/samba

    Further information about Debian LTS security advisories, how to apply     these updates to your system and frequently asked questions can be     found at: https://wiki.debian.org/LTS

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

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

The remote openSUSE 16 host has packages installed that are affected by multiple vulnerabilities as referenced in the openSUSE-SU-2025-20048-1 advisory.

    Update to 4.22.5:

      * CVE-2025-10230: Command injection via WINS server hook script (bsc#1251280).
      * CVE-2025-9640: uninitialized memory disclosure via vfs_streams_xattr (bsc#1251279).

    - Relax samba-gpupdate requirement for cepces, certmonger, and sscep       to a recommends. They are only required if utilizing certificate       auto enrollment (bsc#1249087).

    - Disable timeouts for smb.service so that possibly slow running       ExecStartPre script 'update-samba-security-profile' doesn't       cause service start to fail due to timeouts (bsc#1249181).

    - Ensure semanage is pulled in as a requirement when samba in       installed when selinux security access mechanism that is used       (bsc#1249180).

    - don't attempt to label paths that don't exist, also remove       unecessary evaluation of semange & restorecon cmds (bsc#1249179).

    Update to 4.22.4:

      * netr_LogonSamLogonEx returns NR_STATUS_ACCESS_DENIED with         SysvolReady=0
      * getpwuid does not shift to new DC when current DC is down
      * Windows security hardening locks out schannel'ed netlogon dc         calls like netr_DsRGetDCName-
      * Unresponsive second DC can cause idmapping failure when using         idmap_ad-
      * kinit command is failing with Missing cache Error.
      * Figuring out the DC name from IP address fails and breaks         fork_domain_child().
      * vfs_streams_depot fstatat broken.
      * Delayed leader broadcast can block ctdb forever.
      * Apparently there is a conflict between shadow_copy2 module         and virusfilter (action quarantine).
      * Fix handling of empty GPO link.
      * SMB ACL inheritance doesn't work for files created.

    - adjust gpgme build dependency for future-proofing

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

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

The remote Fedora 42 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2025-7d890563f6 advisory.

    Update to Samba 4.22.6 - Security fix for CVE-2025-9640 and CVE-2025-10230

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

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

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-988620 advisory.

    A flaw was found in Samba, in the vfs_streams_xattr module, where uninitialized heap memory could be     written into alternate data streams. This allows an authenticated user to read residual memory content     that may include sensitive data, resulting in an information disclosure vulnerability.

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

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

It is, therefore, affected by a vulnerability as referenced in the ALAS2023-2025-1234 advisory.

    A flaw was found in Samba, in the vfs_streams_xattr module, where uninitialized heap memory could be     written into alternate data streams. This allows an authenticated user to read residual memory content     that may include sensitive data, resulting in an information disclosure vulnerability. (CVE-2025-9640)

Tenable has extracted the preceding description block directly from the tested product security advisory.

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

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - A flaw was found in Samba, in the vfs_streams_xattr module, where uninitialized heap memory could be     written into alternate data streams. This allows an authenticated user to read residual memory content     that may include sensitive data, resulting in an information disclosure vulnerability. (CVE-2025-9640)

Note that Nessus relies on the presence of the package as reported by the vendor.

The remote Fedora 43 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2025-5f46b27e1c advisory.

    Update to Samba 4.23.2 - Security fix for CVE-2025-9640 and CVE-2025-10230

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

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

The remote Fedora 41 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2025-c0830ff9f4 advisory.

    Security fix for CVE-2025-9640 and CVE-2025-10230

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

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

The remote SUSE Linux SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2025:03618-1 advisory.

    - CVE-2025-9640: Fixed uninitialized memory disclosure via vfs_streams_xattr (bsc#1251279).
    - CVE-2025-10230: Fixed command Injection in WINS server hook script (bsc#1251280).

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

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

The remote SUSE Linux SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2025:3677-1 advisory.

    - CVE-2025-9640: Fixed vfs_streams_xattr uninitialized memory write (bsc#1251279).
    - CVE-2025-10230: Fixed command Injection in WINS Server Hook Script (bsc#1251280).

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

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

The remote SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2025:3676-1 advisory.

    - CVE-2025-9640: Fixed uninitialized memory disclosure via vfs_streams_xattr (bsc#1251279).
    - CVE-2025-10230: Fixed command Injection in WINS server hook script (bsc#1251280).

    Update to 4.21.8:

      * netr_LogonSamLogonEx returns NR_STATUS_ACCESS_DENIED with         SysvolReady=0; (bso#14981).
      * getpwuid does not shift to new DC when current DC is down;
        (bso#15844).
      * Windows security hardening locks out schannel'ed netlogon dc         calls like netr_DsRGetDCName; (bso#15876).
      * kinit command is failing with Missing cache Error;
        (bso#15840).
      * Figuring out the DC name from IP address fails and breaks         fork_domain_child(); (bso#15891).
      * Delayed leader broadcast can block ctdb forever; (bso#15892).
      * 'net ads group' failed to list domain groups; (bso#15900).
      * Apparently there is a conflict between shadow_copy2 module         and virusfilter (action quarantine); (bso#15663).
      * Fix handling of empty GPO link; (bso#15877).
      * SMB ACL inheritance doesn't work for files created;
        (bso#15880).

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

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

The remote SUSE Linux SLES12 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2025:03604-1 advisory.

    - CVE-2025-9640: Fixed uninitialized memory disclosure via vfs_streams_xattr (bsc#1251279).
    - CVE-2025-10230: Fixed command Injection in WINS server hook script (bsc#1251280).

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

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

The remote SUSE Linux SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2025:03603-1 advisory.

    - CVE-2025-9640: Fixed uninitialized memory disclosure via vfs_streams_xattr (bsc#1251279).
    - CVE-2025-10230: Fixed command Injection in WINS server hook script (bsc#1251280).

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

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

The remote Fedora 44 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2025-3ddbddd7e2 advisory.

    Automatic update for samba-4.23.2-1.fc44.

    ##### **Changelog**

    ```
    * Fri Oct 17 2025 Gnther Deschner <gd@samba.org> - 2:4.23.2-1
    - Update to Samba 4.23.2
    - resolves: rhbz#2404204
    - resolves: rhbz#2391698 - Security fix for CVE-2025-9640
    - resolves: rhbz#2394377 - Security fix for CVE-2025-10230

    ```

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

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

The remote SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 / openSUSE 15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2025:03612-1 advisory.

    - CVE-2025-9640: Fixed uninitialized memory disclosure via vfs_streams_xattr (bsc#1251279).
    - CVE-2025-10230: Fixed command Injection in WINS server hook script (bsc#1251280).

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

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

The remote Ubuntu 22.04 LTS / 24.04 LTS / 25.04 / 25.10 host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-7826-1 advisory.

    Andrew Walker discovered that Samba incorrectly initialized memory in the vfs_streams_xattr module. An     authenticated attacker could possibly use this issue to obtain sensitive information. (CVE-2025-9640)

    Igor Morgenstern discovered that Samba incorrectly handled names passed to the WINS hook program. An     attacker could possibly use this issue to execute arbitrary code. (CVE-2025-10230)

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

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

The version of samba installed on the remote host is prior to 4.22.5 / 4.23.2. It is, therefore, affected by multiple vulnerabilities as referenced in the SSA:2025-288-01 advisory.

    New samba packages are available for Slackware 15.0 and -current to fix security issues.

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

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

ID	Name	Product	Family	Severity
281586	EulerOS Virtualization 2.13.1 : samba (EulerOS-SA-2025-2631)	Nessus	Huawei Local Security Checks	critical
281565	EulerOS Virtualization 2.13.0 : samba (EulerOS-SA-2025-2617)	Nessus	Huawei Local Security Checks	critical
278460	EulerOS 2.0 SP13 : samba (EulerOS-SA-2025-2532)	Nessus	Huawei Local Security Checks	critical
278427	EulerOS 2.0 SP13 : samba (EulerOS-SA-2025-2511)	Nessus	Huawei Local Security Checks	critical
277289	Debian dla-4384 : ctdb - security update	Nessus	Debian Local Security Checks	medium
276597	openSUSE 16 Security Update : samba (openSUSE-SU-2025-20048-1)	Nessus	SuSE Local Security Checks	medium
272182	Fedora 42 : samba (2025-7d890563f6)	Nessus	Fedora Local Security Checks	medium
272107	Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: samba (UTSA-2025-988620)	Nessus	Unity Linux Local Security Checks	medium
271743	Amazon Linux 2023 : libnetapi, libnetapi-devel, libsmbclient (ALAS2023-2025-1234)	Nessus	Amazon Linux Local Security Checks	medium
271522	Linux Distros Unpatched Vulnerability : CVE-2025-9640	Nessus	Misc.	medium
271460	Fedora 43 : samba (2025-5f46b27e1c)	Nessus	Fedora Local Security Checks	medium
271223	Fedora 41 : samba (2025-c0830ff9f4)	Nessus	Fedora Local Security Checks	medium
270854	SUSE SLES15 Security Update : samba (SUSE-SU-2025:03618-1)	Nessus	SuSE Local Security Checks	medium
270853	SUSE SLES15 Security Update : samba (SUSE-SU-2025:3677-1)	Nessus	SuSE Local Security Checks	medium
270846	SUSE SLED15 / SLES15 Security Update : samba (SUSE-SU-2025:3676-1)	Nessus	SuSE Local Security Checks	medium
270836	SUSE SLES12 Security Update : samba (SUSE-SU-2025:03604-1)	Nessus	SuSE Local Security Checks	medium
270830	SUSE SLES15 Security Update : samba (SUSE-SU-2025:03603-1)	Nessus	SuSE Local Security Checks	medium
270821	Fedora 44 : samba (2025-3ddbddd7e2)	Nessus	Fedora Local Security Checks	medium
270693	SUSE SLED15 / SLES15 / openSUSE 15 Security Update : samba (SUSE-SU-2025:03612-1)	Nessus	SuSE Local Security Checks	medium
270677	Ubuntu 22.04 LTS / 24.04 LTS / 25.04 / 25.10 : Samba vulnerabilities (USN-7826-1)	Nessus	Ubuntu Local Security Checks	medium
270623	Slackware Linux 15.0 / current samba Multiple Vulnerabilities (SSA:2025-288-01)	Nessus	Slackware Local Security Checks	medium

Detections

Analytics

CVE-2025-9640

medium

Tenable Plugins

critical

critical

critical

critical

medium

medium

medium

medium

medium

medium

medium

medium

medium

medium

medium

medium

medium

medium

medium

medium

medium