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Slackware Linux 15.0 / current tigervnc Multiple Vulnerabilities (SSA:2026-190-01)

critical Nessus Plugin ID 326095

Synopsis

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

Description

The version of tigervnc installed on the remote host is prior to 1.16.2. It is, therefore, affected by multiple vulnerabilities as referenced in the SSA:2026-190-01 advisory.

 New tigervnc packages are available for Slackware 15.0 and -current to fix security issues.

Tenable has extracted the preceding description block directly from the tigervnc security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Upgrade the affected tigervnc package.

See Also

http://www.nessus.org/u?6ab750c7

Plugin Details

Severity: Critical

ID: 326095

File Name: Slackware_SSA_2026-190-01.nasl

Version: 1.1

Type: Local

Published: 7/10/2026

Updated: 7/10/2026

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 58.1

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

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

CVSS Score Source: CVE-2026-56000

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.8

Vector: CVSS:3.0/AV:L/AC:L/PR:L/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: Critical

Base Score: 9

Threat Score: 6.1

Threat Vector: CVSS:4.0/E:U

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

Vulnerability Information

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

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

Exploit Ease: No known exploits are available

Patch Publication Date: 7/9/2026

Vulnerability Publication Date: 7/8/2026

Reference Information

CVE: CVE-2026-55999, CVE-2026-56000