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Debian dla-4473 : zabbix-agent - security update

high Nessus Plugin ID 298321

Synopsis

The remote Debian host is missing a security-related update.

Description

The remote Debian 11 host has packages installed that are affected by a vulnerability as referenced in the dla-4473 advisory.

 - ------------------------------------------------------------------------- Debian LTS Advisory DLA-4473-1 [email protected] https://www.debian.org/lts/security/ Bastien Roucaris February 08, 2026 https://wiki.debian.org/LTS
 - -------------------------------------------------------------------------

 Package : zabbix Version : 1:5.0.47+dfsg-0+deb11u1 CVE ID : CVE-2025-27234

 zabbix a popular network monitoring solution was affected by a vulnerabilty.

 Zabbix Agent 2 smartctl plugin does not properly sanitize smart.disk.get parameters, allowing an attacker to inject unexpected arguments into the smartctl command. In Zabbix 5.0 this allows for remote code execution.

 For Debian 11 bullseye, this problem has been fixed in version 1:5.0.47+dfsg-0+deb11u1.

 We recommend that you upgrade your zabbix packages.

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

 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.

Solution

Upgrade the zabbix-agent packages.

See Also

https://security-tracker.debian.org/tracker/source-package/zabbix

https://packages.debian.org/source/bullseye/zabbix

https://security-tracker.debian.org/tracker/CVE-2025-27234

Plugin Details

Severity: High

ID: 298321

File Name: debian_DLA-4473.nasl

Version: 1.1

Type: local

Agent: unix

Published: 2/8/2026

Updated: 2/8/2026

Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: High

Score: 7.3

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.5

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

CVSS Score Source: CVE-2025-27234

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

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:U/RL:O/RC:C

CVSS v4

Risk Factor: High

Base Score: 7.3

Threat Score: 4.4

Threat Vector: CVSS:4.0/E:U

Vector: CVSS:4.0/AV:A/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Vulnerability Information

CPE: cpe:/o:debian:debian_linux:11.0, p-cpe:/a:debian:debian_linux:zabbix-agent, p-cpe:/a:debian:debian_linux:zabbix-frontend-php, p-cpe:/a:debian:debian_linux:zabbix-java-gateway, p-cpe:/a:debian:debian_linux:zabbix-proxy-mysql, p-cpe:/a:debian:debian_linux:zabbix-proxy-pgsql, p-cpe:/a:debian:debian_linux:zabbix-proxy-sqlite3, p-cpe:/a:debian:debian_linux:zabbix-server-mysql, p-cpe:/a:debian:debian_linux:zabbix-server-pgsql

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Exploit Ease: No known exploits are available

Patch Publication Date: 2/8/2026

Vulnerability Publication Date: 9/12/2025

Reference Information

CVE: CVE-2025-27234