Detections
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RHEL 9 : postgresql:18 (RHSA-2026:85814)

high Nessus Plugin ID 367755

Synopsis

The remote Red Hat host is missing a security update for postgresql:18.

Description

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2026:85814 advisory.

 PostgreSQL is an advanced object-relational database management system (DBMS).

 Security Fix(es):

 * pgvector: pgvector: Arbitrary code execution via out-of-bounds write during IVFFlat index build (CVE-2026-103484)

 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.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise 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 RHEL postgresql:18 package based on the guidance in RHSA-2026:85814.

See Also

https://access.redhat.com/errata/RHSA-2026:85814

https://access.redhat.com/security/updates/classification/#important

https://bugzilla.redhat.com/show_bug.cgi?id=2544842

http://www.nessus.org/u?4c0a4c8a

Plugin Details

Severity: High

ID: 367755

File Name: redhat-RHSA-2026-85814.nasl

Version: 1.1

Type: Local

Agent: unix

Published: 10/20/2026

Updated: 10/20/2026

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

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 58.49

Vendor

Vendor Severity: Important

CVSS v2

Risk Factor: High

Base Score: 9

Temporal Score: 6.7

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

CVSS Score Source: CVE-2026-103484

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 7.7

Vector: CVSS:3.0/AV:N/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

Vulnerability Information

CPE: cpe:/o:redhat:enterprise_linux:9, cpe:/o:redhat:rhel_eus:9.8, p-cpe:/a:redhat:enterprise_linux:pg_repack, p-cpe:/a:redhat:enterprise_linux:pgaudit, p-cpe:/a:redhat:enterprise_linux:pgvector, p-cpe:/a:redhat:enterprise_linux:postgis-client, p-cpe:/a:redhat:enterprise_linux:postgis-docs, p-cpe:/a:redhat:enterprise_linux:postgis-upgrade, p-cpe:/a:redhat:enterprise_linux:postgis-utils, p-cpe:/a:redhat:enterprise_linux:postgis, p-cpe:/a:redhat:enterprise_linux:postgres-decoderbufs, p-cpe:/a:redhat:enterprise_linux:postgresql-contrib, p-cpe:/a:redhat:enterprise_linux:postgresql-docs, p-cpe:/a:redhat:enterprise_linux:postgresql-plperl, p-cpe:/a:redhat:enterprise_linux:postgresql-plpython3, p-cpe:/a:redhat:enterprise_linux:postgresql-pltcl, p-cpe:/a:redhat:enterprise_linux:postgresql-private-devel, p-cpe:/a:redhat:enterprise_linux:postgresql-private-libs, p-cpe:/a:redhat:enterprise_linux:postgresql-server-devel, p-cpe:/a:redhat:enterprise_linux:postgresql-server, p-cpe:/a:redhat:enterprise_linux:postgresql-static, p-cpe:/a:redhat:enterprise_linux:postgresql-test-rpm-macros, p-cpe:/a:redhat:enterprise_linux:postgresql-test, p-cpe:/a:redhat:enterprise_linux:postgresql-upgrade-devel, p-cpe:/a:redhat:enterprise_linux:postgresql-upgrade, p-cpe:/a:redhat:enterprise_linux:postgresql

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: 10/20/2026

Vulnerability Publication Date: 10/1/2026

Reference Information

CVE: CVE-2026-103484

CWE: 787

RHSA: 2026:85814