Linux Distros Unpatched Vulnerability : CVE-2026-14677

high Nessus Plugin ID 335220

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Synopsis

The Linux/Unix host has one or more packages installed with a vulnerability that the vendor indicates will not be patched.

Description

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

- Integer wraparound in PostgreSQL 32-bit builds of pltcl and plperl allows an object creator to cause the server to undersize an allocation and write out-of-bounds via crafted function bodies. This may execute arbitrary code as the operating system user running the database. CVE-2026-6473 had fixed similar problems. Versions before PostgreSQL 18.6, 17.11, 16.15, 15.19, and 14.24 are affected. (CVE-2026-14677)

Note that Nessus relies on the presence of the package as reported by the vendor.

Solution

There is no known solution at this time.

Plugin Details

Severity: High

ID: 335220

File Name: unpatched_CVE_2026_14677.nasl

Version: 1.14

Type: Local

Agent: unix

Family: Misc.

Published: 8/13/2026

Updated: 8/31/2026

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

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 58.18

CVSS v2

Risk Factor: High

Base Score: 9

Temporal Score: 7.7

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

CVSS Score Source: CVE-2026-14677

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 8.1

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:U/RC:C

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:14.04:-:lts, cpe:/o:canonical:ubuntu_linux:16.04:-:lts, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, cpe:/o:canonical:ubuntu_linux:20.04:-:lts, cpe:/o:centos:centos:7, cpe:/o:centos:centos:8, cpe:/o:debian:debian_linux:11.0, cpe:/o:redhat:enterprise_linux:10, cpe:/o:redhat:enterprise_linux:7, cpe:/o:redhat:enterprise_linux:8, cpe:/o:redhat:enterprise_linux:9, p-cpe:/a:canonical:ubuntu_linux:postgresql-10, p-cpe:/a:canonical:ubuntu_linux:postgresql-12, p-cpe:/a:canonical:ubuntu_linux:postgresql-9.3, p-cpe:/a:canonical:ubuntu_linux:postgresql-9.5, p-cpe:/a:centos:centos:pg_repack, p-cpe:/a:centos:centos:pgaudit, p-cpe:/a:centos:centos:postgres-decoderbufs, p-cpe:/a:centos:centos:postgresql-contrib, p-cpe:/a:centos:centos:postgresql-devel, p-cpe:/a:centos:centos:postgresql-docs, p-cpe:/a:centos:centos:postgresql-libs, p-cpe:/a:centos:centos:postgresql-plperl, p-cpe:/a:centos:centos:postgresql-plpython3, p-cpe:/a:centos:centos:postgresql-plpython, p-cpe:/a:centos:centos:postgresql-pltcl, p-cpe:/a:centos:centos:postgresql-private-devel, p-cpe:/a:centos:centos:postgresql-private-libs, p-cpe:/a:centos:centos:postgresql-server-devel, p-cpe:/a:centos:centos:postgresql-server, p-cpe:/a:centos:centos:postgresql-static, p-cpe:/a:centos:centos:postgresql-test-rpm-macros, p-cpe:/a:centos:centos:postgresql-test, p-cpe:/a:centos:centos:postgresql-upgrade-devel, p-cpe:/a:centos:centos:postgresql-upgrade, p-cpe:/a:centos:centos:postgresql16, p-cpe:/a:centos:centos:postgresql18-contrib, p-cpe:/a:centos:centos:postgresql18-docs, p-cpe:/a:centos:centos:postgresql18-plperl, p-cpe:/a:centos:centos:postgresql18-plpython3, p-cpe:/a:centos:centos:postgresql18-private-devel, p-cpe:/a:centos:centos:postgresql18-private-libs, p-cpe:/a:centos:centos:postgresql18-server-devel, p-cpe:/a:centos:centos:postgresql18-server, p-cpe:/a:centos:centos:postgresql18-static, p-cpe:/a:centos:centos:postgresql18-test-rpm-macros, p-cpe:/a:centos:centos:postgresql18-test, p-cpe:/a:centos:centos:postgresql18-upgrade-devel, p-cpe:/a:centos:centos:postgresql18-upgrade, p-cpe:/a:centos:centos:postgresql18, p-cpe:/a:centos:centos:postgresql, p-cpe:/a:debian:debian_linux:postgresql-13, p-cpe:/a:redhat:enterprise_linux:pg_repack, p-cpe:/a:redhat:enterprise_linux:pgaudit, p-cpe:/a:redhat:enterprise_linux:postgres-decoderbufs, p-cpe:/a:redhat:enterprise_linux:postgresql-contrib, p-cpe:/a:redhat:enterprise_linux:postgresql-devel, p-cpe:/a:redhat:enterprise_linux:postgresql-docs, p-cpe:/a:redhat:enterprise_linux:postgresql-libs, p-cpe:/a:redhat:enterprise_linux:postgresql-plperl, p-cpe:/a:redhat:enterprise_linux:postgresql-plpython3, p-cpe:/a:redhat:enterprise_linux:postgresql-plpython, 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:postgresql16, p-cpe:/a:redhat:enterprise_linux:postgresql18-contrib, p-cpe:/a:redhat:enterprise_linux:postgresql18-docs, p-cpe:/a:redhat:enterprise_linux:postgresql18-plperl, p-cpe:/a:redhat:enterprise_linux:postgresql18-plpython3, p-cpe:/a:redhat:enterprise_linux:postgresql18-private-devel, p-cpe:/a:redhat:enterprise_linux:postgresql18-private-libs, p-cpe:/a:redhat:enterprise_linux:postgresql18-server-devel, p-cpe:/a:redhat:enterprise_linux:postgresql18-server, p-cpe:/a:redhat:enterprise_linux:postgresql18-static, p-cpe:/a:redhat:enterprise_linux:postgresql18-test-rpm-macros, p-cpe:/a:redhat:enterprise_linux:postgresql18-test, p-cpe:/a:redhat:enterprise_linux:postgresql18-upgrade-devel, p-cpe:/a:redhat:enterprise_linux:postgresql18-upgrade, p-cpe:/a:redhat:enterprise_linux:postgresql18, p-cpe:/a:redhat:enterprise_linux:postgresql

Required KB Items: Host/cpu, Host/local_checks_enabled, global_settings/vendor_unpatched, Host/OS/identifier

Exploit Ease: No known exploits are available

Vulnerability Publication Date: 8/13/2026

Reference Information

CVE: CVE-2026-14677

Detections

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