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CentOS Linux 8.4 [TuxCare] Security Update: ctdb / ctdb-tests / libsmbclient / libsmbclient-devel / libwbclient / etc (CENTOS8.4:CLSA-2026:1780478501)

critical Nessus Plugin ID 352864

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Synopsis

The CentOS Linux host is missing one or more security updates.

Description

The CentOS Linux 8.4 host has packages installed that are affected by a vulnerability as referenced in the TuxCare CENTOS8.4:CLSA-2026:1780478501 advisory.

 - A flaw was found in the Samba printing subsystem. Samba passes the client-controlled job description string to the command configured with the print command setting via the %J substitution character without escaping shell meta characters. A remote attacker could exploit this vulnerability by sending a specially crafted print job description that contains unescaped shell characters. This could lead to remote code execution on the affected system. (CVE-2026-4480)

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 based on the guidance in TuxCare advisory CENTOS8.4:CLSA-2026:1780478501.

See Also

https://cve.tuxcare.com/els/releases/CLSA-2026:1780478501

http://www.nessus.org/u?53d818e1

Plugin Details

Severity: Critical

ID: 352864

File Name: tuxcare_centos_8.4_CLSA-2026-1780478501.nasl

Version: 1.2

Type: Local

Agent: unix

Published: 9/30/2026

Updated: 10/1/2026

Supported Sensors: Continuous Assessment, Nessus Agent, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

Risk Information

VPR

Risk Factor: High

Score: 7.9

Percentile: 99.35

Vendor

Vendor Severity: Critical

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 8.3

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

CVSS Score Source: CVE-2026-4480

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 9.1

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

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

Vulnerability Information

Required KB Items: Host/OS/extended-third-party, Host/local_checks_enabled, Host/CentOS/release, Host/CentOS/rpm-list

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 6/3/2026

Vulnerability Publication Date: 5/26/2026

Exploitable With

Core Impact

Reference Information

CVE: CVE-2026-4480

CLSA: 2026:1780478501