RHEL 9 : bind9.18 (RHSA-2026:97585)

medium Nessus Plugin ID 378521

Synopsis

The remote Red Hat host is missing one or more security updates.

Description

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:97585 advisory.

BIND (Berkeley Internet Name Domain) is an implementation of the DNS (Domain Name System) protocols. BIND includes a DNS server (named), which resolves host names to IP addresses; a resolver library (routines for applications to use when interfacing with DNS); and tools for verifying that the DNS server is operating properly.

Security Fix(es):

* bind: Amplification vulnerabilities via self-pointed glue records (CVE-2026-3592)

* bind: Unbounded resend loop in BIND 9 resolver (CVE-2026-5950)

Bug Fix(es) and Enhancement(s):

* Bind 9.18.29 DNSSEC Key Rollover with KASP Causes ZSK Key To Be Removed Prematurely (JIRA:RHEL-144422)

* [BUG] Bind DNS forwarder when configured to allow stale answers fails to provide resonse of 3 layer CNAME when TTL abruptly changes to 0 (JIRA:RHEL-86172)

* bind9.18: New root trust anchor key for DNSSEC [rhel-9.9] (JIRA:RHEL-255678)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the Red Hat Enterprise Linux 9 Release Notes linked from the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux 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

Update the affected packages.

Plugin Details

Severity: Medium

ID: 378521

File Name: redhat-RHSA-2026-97585.nasl

Version: 1.2

Type: Local

Agent: unix

Family: Red Hat Local Security Checks

Published: 11/10/2026

Updated: 11/11/2026

Supported Sensors: Nessus Agent, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 1.2

Percentile: 0.01

Vendor

Vendor Severity: Moderate

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

CVSS Score Source: CVE-2026-5950

CVSS v3

Risk Factor: Medium

Base Score: 5.3

Temporal Score: 4.6

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

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

Vulnerability Information

CPE: cpe:/o:redhat:enterprise_linux:9, p-cpe:/a:redhat:enterprise_linux:bind9.18-chroot, p-cpe:/a:redhat:enterprise_linux:bind9.18-devel, p-cpe:/a:redhat:enterprise_linux:bind9.18-dnssec-utils, p-cpe:/a:redhat:enterprise_linux:bind9.18-doc, p-cpe:/a:redhat:enterprise_linux:bind9.18-libs, p-cpe:/a:redhat:enterprise_linux:bind9.18-utils, p-cpe:/a:redhat:enterprise_linux:bind9.18

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

Exploit Ease: No known exploits are available

Patch Publication Date: 11/10/2026

Vulnerability Publication Date: 5/20/2026

Reference Information

CVE: CVE-2026-3592, CVE-2026-5950

CWE: 770, 835

RHSA: 2026:97585

Detections

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