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Slackware Linux 15.0 / current telnet Vulnerability (SSA:2026-059-02)

critical Nessus Plugin ID 300639

Synopsis

The remote Slackware Linux host is missing a security update to telnet.

Description

The version of telnet installed on the remote host is prior to 0.17. It is, therefore, affected by a vulnerability as referenced in the SSA:2026-059-02 advisory.

 New telnet packages are available for Slackware 15.0 and -current to fix a security issue.

Tenable has extracted the preceding description block directly from the telnet 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 affected telnet package.

See Also

http://www.nessus.org/u?98792314

Plugin Details

Severity: Critical

ID: 300639

File Name: Slackware_SSA_2026-059-02.nasl

Version: 1.1

Type: local

Published: 3/4/2026

Updated: 3/4/2026

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.4

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

CVSS Score Source: CVE-2020-10188

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

Vulnerability Information

CPE: p-cpe:/a:slackware:slackware_linux:telnet, cpe:/o:slackware:slackware_linux, cpe:/o:slackware:slackware_linux:15.0

Required KB Items: Host/local_checks_enabled, Host/Slackware/release, Host/Slackware/packages

Exploit Ease: No known exploits are available

Patch Publication Date: 2/28/2026

Vulnerability Publication Date: 3/6/2020

Reference Information

CVE: CVE-2020-10188