Linux Distros Unpatched Vulnerability : CVE-2026-43958

high Nessus Plugin ID 318212

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.

- A flaw was found in rrdcached, a component of rrdtool. A local attacker with access to a rrdcached socket can exploit a stack-based buffer overflow by sending an oversized CREATE request. This vulnerability can lead to a denial of service by crashing the daemon or potentially allow for arbitrary code execution, impacting the integrity and confidentiality of data. (CVE-2026-43958)

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: 318212

File Name: unpatched_CVE_2026_43958.nasl

Version: 1.2

Type: Local

Agent: unix

Family: Misc.

Published: 6/2/2026

Updated: 6/3/2026

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Medium

Base Score: 4.6

Temporal Score: 3.9

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

CVSS Score Source: CVE-2026-43958

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 7.1

Vector: CVSS:3.0/AV:L/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: p-cpe:/a:centos:centos:rrdtool-lua, cpe:/o:debian:debian_linux:14.0, p-cpe:/a:redhat:enterprise_linux:rrdtool-ruby, cpe:/o:centos:centos:8, cpe:/o:canonical:ubuntu_linux:16.04:-:lts, cpe:/o:canonical:ubuntu_linux:22.04:-:lts, cpe:/o:debian:debian_linux:11.0, p-cpe:/a:centos:centos:rrdtool-python, cpe:/o:canonical:ubuntu_linux:24.04:-:lts, p-cpe:/a:centos:centos:rrdtool-ruby, p-cpe:/a:redhat:enterprise_linux:rrdtool-lua, cpe:/o:centos:centos:7, p-cpe:/a:centos:centos:rrdtool-perl, cpe:/o:redhat:enterprise_linux:8, cpe:/o:redhat:enterprise_linux:10, p-cpe:/a:centos:centos:rrdtool, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, p-cpe:/a:centos:centos:rrdtool-tcl, cpe:/o:redhat:enterprise_linux:7, p-cpe:/a:centos:centos:python3-rrdtool, p-cpe:/a:debian:debian_linux:rrdtool, cpe:/o:canonical:ubuntu_linux:25.10, cpe:/o:debian:debian_linux:13.0, p-cpe:/a:canonical:ubuntu_linux:rrdtool, cpe:/o:redhat:enterprise_linux:9, p-cpe:/a:redhat:enterprise_linux:rrdtool-perl, p-cpe:/a:redhat:enterprise_linux:python3-rrdtool, cpe:/o:canonical:ubuntu_linux:26.04:-:lts, p-cpe:/a:redhat:enterprise_linux:rrdtool-doc, p-cpe:/a:redhat:enterprise_linux:rrdtool, p-cpe:/a:centos:centos:rrdtool-doc, p-cpe:/a:centos:centos:rrdtool-devel, p-cpe:/a:redhat:enterprise_linux:rrdtool-tcl, p-cpe:/a:centos:centos:rrdtool-php, cpe:/o:canonical:ubuntu_linux:14.04:-:lts, p-cpe:/a:redhat:enterprise_linux:rrdtool-python, p-cpe:/a:redhat:enterprise_linux:rrdtool-php, p-cpe:/a:redhat:enterprise_linux:rrdtool-devel, cpe:/o:canonical:ubuntu_linux:20.04:-:lts, cpe:/o:redhat:enterprise_linux:6, cpe:/o:debian:debian_linux:12.0

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

Exploit Ease: No known exploits are available

Vulnerability Publication Date: 6/1/2026

Reference Information

CVE: CVE-2026-43958

Detections

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