Unity Linux 20.1050a / 20.1060a / 20.1070a Security Update: bind (UTSA-2026-103697)

high Nessus Plugin ID 338156

Synopsis

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

Description

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-103697 advisory.

The BIND resolver accepts validly-signed NSEC records where the Next Domain Name field points outside the signer's zone.
This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.24, 9.21.0 through 9.21.23, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.24-S1.

Tenable has extracted the preceding description block directly from the Unity Linux 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

Update the affected bind package.

Plugin Details

Severity: High

ID: 338156

File Name: unity_linux_UTSA-2026-103697.nasl

Version: 1.1

Type: Local

Family: Unity Linux Local Security Checks

Published: 8/19/2026

Updated: 8/19/2026

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.3

Percentile: 51.06

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

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

CVSS Score Source: CVE-2026-13321

CVSS v3

Risk Factor: High

Base Score: 8.6

Temporal Score: 7.5

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

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

Vulnerability Information

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/UOS-Server/release, Host/UOS-Server/rpm-list

Exploit Ease: No known exploits are available

Patch Publication Date: 8/20/2026

Vulnerability Publication Date: 7/22/2026

Reference Information

CVE: CVE-2026-13321

Detections

Analytics