TencentOS Server 4: moby (TSSA-2026:0756)

medium Nessus Plugin ID 330787

Synopsis

The remote TencentOS Server 4 host is missing one or more security updates.

Description

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-2026:0756 advisory.

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

CVE-2025-54410:
Moby is an open source container framework developed by Docker Inc. that is distributed as Docker Engine, Mirantis Container Runtime, and various other downstream projects/products. A firewalld vulnerability affects Moby releases before 28.0.0. When firewalld reloads, Docker fails to re-create iptables rules that isolate bridge networks, allowing any container to access all ports on any other container across different bridge networks on the same host. This breaks network segmentation between containers that should be isolated, creating significant risk in multi-tenant environments. Only containers in --internal networks remain protected.
Workarounds include reloading firewalld and either restarting the docker daemon, re-creating bridge networks, or using rootless mode. Maintainers anticipate a fix for this issue in version 25.0.13.

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.

Solution

Update the affected packages.

Plugin Details

Severity: Medium

ID: 330787

File Name: tencentos_TSSA_2026_0756.nasl

Version: 1.1

Type: Local

Family: Tencent Local Security Checks

Published: 7/29/2026

Updated: 7/29/2026

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 2.3

Percentile: 9.4

CVSS v2

Risk Factor: Low

Base Score: 3.2

Temporal Score: 2.4

Vector: CVSS2#AV:L/AC:L/Au:S/C:P/I:P/A:N

CVSS Score Source: CVE-2025-54410

CVSS v3

Risk Factor: Medium

Base Score: 5.2

Temporal Score: 4.5

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:tencent:tencentos_server:4, p-cpe:/a:tencent:tencentos_server:moby

Required KB Items: Host/local_checks_enabled, Host/etc/os-release, Host/TencentOS/rpm-list, Host/cpu

Exploit Ease: No known exploits are available

Patch Publication Date: 7/28/2026

Vulnerability Publication Date: 7/29/2025

Reference Information

CVE: CVE-2025-54410

IAVA: 2025-A-0560-S

Detections

Analytics