Detections
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Oracle Linux 8 : bind9.16 (ELSA-2026-54509)

high Nessus Plugin ID 335391

Synopsis

The remote Oracle Linux host is missing one or more security updates.

Description

The remote Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2026-54509 advisory.

 - Fix NSEC3 signer validation (CVE-2026-10723)
 - Reject out-of-zone NSEC next owner names (CVE-2026-13321)
 - Fix CVE-2026-11622: reference-counted DNS cache slab headers
 - Fix CVE-2026-11721: RRSIG labels validation and out-of-zone signing
 - Fix RPZ name-too-long wildcard expansion (CVE-2026-11331)
 - Fix CVE-2026-13204: ensure NSEC/NSEC3 has matching RRSIG

Tenable has extracted the preceding description block directly from the Oracle 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.

See Also

https://linux.oracle.com/errata/ELSA-2026-54509.html

Plugin Details

Severity: High

ID: 335391

File Name: oraclelinux_ELSA-2026-54509.nasl

Version: 1.1

Type: Local

Agent: unix

Published: 8/14/2026

Updated: 8/14/2026

Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Continuous Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5

Percentile: 93.92

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

CPE: cpe:/o:oracle:linux:8, p-cpe:/a:oracle:linux:bind9.16-chroot, p-cpe:/a:oracle:linux:bind9.16-devel, p-cpe:/a:oracle:linux:bind9.16-dnssec-utils, p-cpe:/a:oracle:linux:bind9.16-doc, p-cpe:/a:oracle:linux:bind9.16-libs, p-cpe:/a:oracle:linux:bind9.16-license, p-cpe:/a:oracle:linux:bind9.16-utils, p-cpe:/a:oracle:linux:bind9.16, p-cpe:/a:oracle:linux:python3-bind9.16

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

Exploit Ease: No known exploits are available

Patch Publication Date: 8/13/2026

Vulnerability Publication Date: 7/22/2026

Reference Information

CVE: CVE-2026-10723, CVE-2026-11331, CVE-2026-11622, CVE-2026-11721, CVE-2026-13204, CVE-2026-13321