Linux Distros Unpatched Vulnerability : CVE-2026-4480

critical Nessus Plugin ID 316801

Synopsis

The Linux/Unix host has one or more packages installed with a vulnerability that the vendor indicates will not be patched.

Description

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 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 relies on the presence of the package as reported by the vendor.

Solution

There is no known solution at this time.

Plugin Details

Severity: Critical

ID: 316801

File Name: unpatched_CVE_2026_4480.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Misc.

Published: 5/26/2026

Updated: 5/26/2026

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus

Risk Information

VPR

Risk Factor: High

Score: 7.3

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.4

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

CVSS Score Source: CVE-2026-4480

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 9

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:U/RC:C

Vulnerability Information

CPE: cpe:/o:debian:debian_linux:11.0, cpe:/o:centos:centos:7, cpe:/o:redhat:enterprise_linux:7, cpe:/o:redhat:enterprise_linux:8, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, cpe:/o:canonical:ubuntu_linux:16.04:-:lts, cpe:/o:canonical:ubuntu_linux:20.04:-:lts, p-cpe:/a:centos:centos:samba, p-cpe:/a:centos:centos:samba-client, p-cpe:/a:centos:centos:samba-common, p-cpe:/a:centos:centos:libsmbclient, p-cpe:/a:centos:centos:libsmbclient-devel, p-cpe:/a:centos:centos:samba-winbind, p-cpe:/a:centos:centos:samba-winbind-clients, p-cpe:/a:centos:centos:samba-winbind-krb5-locator, p-cpe:/a:centos:centos:libwbclient, p-cpe:/a:centos:centos:libwbclient-devel, p-cpe:/a:centos:centos:samba-dc, p-cpe:/a:centos:centos:samba-dc-libs, p-cpe:/a:centos:centos:samba-devel, p-cpe:/a:centos:centos:samba-libs, p-cpe:/a:centos:centos:samba-pidl, p-cpe:/a:centos:centos:samba-python, p-cpe:/a:centos:centos:samba-test, p-cpe:/a:centos:centos:samba-test-devel, p-cpe:/a:centos:centos:samba-vfs-glusterfs, p-cpe:/a:centos:centos:samba-winbind-modules, p-cpe:/a:centos:centos:ldb-tools, p-cpe:/a:centos:centos:libldb, p-cpe:/a:centos:centos:libldb-devel, p-cpe:/a:centos:centos:ctdb, p-cpe:/a:centos:centos:ctdb-devel, p-cpe:/a:centos:centos:ctdb-tests, p-cpe:/a:centos:centos:samba-client-libs, p-cpe:/a:centos:centos:samba-common-libs, p-cpe:/a:centos:centos:samba-common-tools, p-cpe:/a:centos:centos:samba-test-libs, p-cpe:/a:centos:centos:samba-krb5-printing, p-cpe:/a:centos:centos:samba-python-test, p-cpe:/a:debian:debian_linux:samba, p-cpe:/a:redhat:enterprise_linux:samba, p-cpe:/a:redhat:enterprise_linux:samba-client, p-cpe:/a:redhat:enterprise_linux:samba-common, p-cpe:/a:redhat:enterprise_linux:libsmbclient, p-cpe:/a:redhat:enterprise_linux:libsmbclient-devel, p-cpe:/a:redhat:enterprise_linux:samba-winbind, p-cpe:/a:redhat:enterprise_linux:samba-winbind-clients, p-cpe:/a:redhat:enterprise_linux:samba-winbind-krb5-locator, p-cpe:/a:redhat:enterprise_linux:ctdb, p-cpe:/a:redhat:enterprise_linux:ctdb-devel, p-cpe:/a:redhat:enterprise_linux:ctdb-tests, p-cpe:/a:redhat:enterprise_linux:libwbclient, p-cpe:/a:redhat:enterprise_linux:libwbclient-devel, p-cpe:/a:redhat:enterprise_linux:samba-client-libs, p-cpe:/a:redhat:enterprise_linux:samba-common-libs, p-cpe:/a:redhat:enterprise_linux:samba-common-tools, p-cpe:/a:redhat:enterprise_linux:samba-dc, p-cpe:/a:redhat:enterprise_linux:samba-dc-libs, p-cpe:/a:redhat:enterprise_linux:samba-devel, p-cpe:/a:redhat:enterprise_linux:samba-libs, p-cpe:/a:redhat:enterprise_linux:samba-pidl, p-cpe:/a:redhat:enterprise_linux:samba-python, p-cpe:/a:redhat:enterprise_linux:samba-test, p-cpe:/a:redhat:enterprise_linux:samba-test-devel, p-cpe:/a:redhat:enterprise_linux:samba-test-libs, p-cpe:/a:redhat:enterprise_linux:samba-vfs-glusterfs, p-cpe:/a:redhat:enterprise_linux:samba-winbind-modules, p-cpe:/a:redhat:enterprise_linux:ldb-tools, p-cpe:/a:redhat:enterprise_linux:libldb, p-cpe:/a:redhat:enterprise_linux:libldb-devel, p-cpe:/a:redhat:enterprise_linux:samba-krb5-printing, p-cpe:/a:redhat:enterprise_linux:python3-samba, p-cpe:/a:redhat:enterprise_linux:python3-samba-test, p-cpe:/a:redhat:enterprise_linux:samba-python-test, p-cpe:/a:canonical:ubuntu_linux:samba, p-cpe:/a:redhat:enterprise_linux:python3-ldb, cpe:/o:centos:centos:8, p-cpe:/a:centos:centos:python3-samba, p-cpe:/a:centos:centos:python3-samba-test, p-cpe:/a:centos:centos:python3-ldb, p-cpe:/a:redhat:enterprise_linux:samba-winexe, p-cpe:/a:centos:centos:samba-winexe, p-cpe:/a:redhat:enterprise_linux:samba-vfs-iouring, p-cpe:/a:centos:centos:samba-vfs-iouring, cpe:/o:canonical:ubuntu_linux:14.04:-:lts, cpe:/o:redhat:enterprise_linux:9, p-cpe:/a:redhat:enterprise_linux:libnetapi, p-cpe:/a:redhat:enterprise_linux:libnetapi-devel, p-cpe:/a:redhat:enterprise_linux:python3-samba-dc, p-cpe:/a:redhat:enterprise_linux:python3-samba-devel, p-cpe:/a:redhat:enterprise_linux:samba-dcerpc, p-cpe:/a:redhat:enterprise_linux:samba-ldb-ldap-modules, p-cpe:/a:redhat:enterprise_linux:samba-tools, p-cpe:/a:redhat:enterprise_linux:samba-usershares, p-cpe:/a:centos:centos:libnetapi, p-cpe:/a:centos:centos:libnetapi-devel, p-cpe:/a:centos:centos:python3-samba-dc, p-cpe:/a:centos:centos:python3-samba-devel, p-cpe:/a:centos:centos:samba-dcerpc, p-cpe:/a:centos:centos:samba-ldb-ldap-modules, p-cpe:/a:centos:centos:samba-tools, p-cpe:/a:centos:centos:samba-usershares, cpe:/o:redhat:enterprise_linux:10, cpe:/o:debian:debian_linux:14.0, p-cpe:/a:redhat:enterprise_linux:samba-gpupdate, p-cpe:/a:centos:centos:samba-gpupdate

Required KB Items: Host/local_checks_enabled, Host/cpu, global_settings/vendor_unpatched, Host/OS/identifier

Exploit Ease: No known exploits are available

Vulnerability Publication Date: 5/26/2026

Reference Information

CVE: CVE-2026-4480

Detections

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