Detections
Analytics
Unity Linux 20.1050a / 20.1060a / 20.1070a Security Update: unbound (UTSA-2026-130094)
critical Nessus Plugin ID 365841
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-2026-130094 advisory.In NLnet Labs Unbound up to and including 1.26.0, a vulnerability was found in the DNSSEC validator that enables denial of service and possible remote code execution as a result of digesting DNSKEYs. A DNSKEY with an owner compression pointer to its own RDATA can overflow the digest buffer. Remote code execution is possible through attacker controlled data. An adversary can exploit the vulnerability by controlling a malicious zone and querying a vulnerable Unbound.
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 unbound package.See Also
https://access.redhat.com/security/cve/CVE-2026-81642
https://www.nlnetlabs.nl/downloads/unbound/CVE-2026-81642.txt
Plugin Details
Severity: Critical
ID: 365841
File Name: unity_linux_UTSA-2026-130094.nasl
Version: 1.1
Type: Local
Published: 10/14/2026
Updated: 10/14/2026
Supported Sensors: Nessus
Risk Information
VPR
Risk Factor: High
Score: 7.6
Percentile: 98.25
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-2026-81642
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: Critical
Base Score: 10
Threat Score: 9.1
Threat Vector: CVSS:4.0/E:U
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
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: 10/15/2026
Vulnerability Publication Date: 9/16/2026
Reference Information
CVE: CVE-2026-81642