The version of Tencent Linux installed on the remote TencentOS Server 4 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the TSSA-2026:0124 advisory.

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

    CVE-2025-12748:
    A flaw was discovered in libvirt in the XML file processing. More specifically, the parsing of user     provided XML files was performed before the ACL checks. A malicious user with limited permissions could     exploit this flaw by submitting a specially crafted XML file, causing libvirt to allocate too much memory     on the host. The excessive memory consumption could lead to a libvirt process crash on the host, resulting     in a denial-of-service condition.

Tenable has extracted the preceding description block directly from the Tencent 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.

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

    A flaw was discovered in libvirt in the XML file processing. More specifically, the parsing of user     provided XML files was performed before the ACL checks. A malicious user with limited permissions could     exploit this flaw by submitting a specially crafted XML file, causing libvirt to allocate too much memory     on the host. The excessive memory consumption could lead to a libvirt process crash on the host, resulting     in a denial-of-service condition.(CVE-2025-12748)

    A flaw was found in libvirt. External inactive snapshots for shut-down VMs are incorrectly created as     world-readable, making it possible for unprivileged users to inspect the guest OS contents. This results     in an information disclosure vulnerability.(CVE-2025-13193)

Tenable has extracted the preceding description block directly from the EulerOS Virtualization libvirt 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 RockyLinux 9 host has packages installed that are affected by a vulnerability as referenced in the RLSA-2026:18748 advisory.

    * libvirt: Denial of service in XML parsing (CVE-2025-12748)

Tenable has extracted the preceding description block directly from the RockyLinux 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 version of libvirt installed on the remote host is prior to 4.5.0-36. It is, therefore, affected by a vulnerability as referenced in the ALAS2-2025-3115 advisory.

    A flaw was discovered in libvirt in the XML file processing. More specifically, the parsing of user     provided XML files was performed before the ACL checks. A malicious user with limited permissions could     exploit this flaw by submitting a specially crafted XML file, causing libvirt to allocate too much memory     on the host. The excessive memory consumption could lead to a libvirt process crash on the host, resulting     in a denial-of-service condition. (CVE-2025-12748)

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 remote Redhat Enterprise Linux 10 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2026:18326 advisory.

    Kernel-based Virtual Machine (KVM) offers a full virtualization solution forLinux on numerous hardware     platforms. The virt:rhel module contains packageswhich provide user-space components used to run virtual     machines using KVM.The packages also provide APIs for managing and interacting with the virtualized     systems.

    Security Fix(es):

    * libvirt: Denial of service in XML parsing (CVE-2025-12748)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

    Additional Changes:

    For detailed information on changes in this release, see the Red Hat Enterprise Linux 10 Release Notes     linked from the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise 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.

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2026:18748 advisory.

    Kernel-based Virtual Machine (KVM) offers a full virtualization solution forLinux on numerous hardware     platforms. The virt:rhel module contains packageswhich provide user-space components used to run virtual     machines using KVM.The packages also provide APIs for managing and interacting with the virtualized     systems.

    Security Fix(es):

    * libvirt: Denial of service in XML parsing (CVE-2025-12748)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

    Additional Changes:

    For detailed information on changes in this release, see the Red Hat Enterprise Linux 9 Release Notes     linked from the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise 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.

ID	名称	产品	系列	发布时间	最近更新时间	严重程度
300597	TencentOS Server 4: libvirt (TSSA-2026:0124)	Nessus	Tencent Local Security Checks	2026/3/4	2026/3/4	medium
302983	EulerOS Virtualization 2.13.1 : libvirt (EulerOS-SA-2026-1639)	Nessus	Huawei Local Security Checks	2026/3/18	2026/3/18	medium
317437	RockyLinux 9 : libvirt (RLSA-2026:18748)	Nessus	Rocky Linux Local Security Checks	2026/5/28	2026/6/4	medium
281801	Amazon Linux 2 : libvirt, --advisory ALAS2-2025-3115 (ALAS-2025-3115)	Nessus	Amazon Linux Local Security Checks	2026/1/5	2026/1/5	medium
315397	RHEL 10 : libvirt (RHSA-2026:18326)	Nessus	Red Hat Local Security Checks	2026/5/19	2026/5/19	medium
315414	RHEL 9 : libvirt (RHSA-2026:18748)	Nessus	Red Hat Local Security Checks	2026/5/19	2026/5/19	medium

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