Linux Distros Unpatched Vulnerability : CVE-2026-43619

critical Nessus Plugin ID 315596

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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.

- Rsync version 3.4.2 and prior contain symlink race condition vulnerabilities in path-based system calls including chmod, lchown, utimes, rename, unlink, mkdir, symlink, mknod, link, rmdir, and lstat that allow local attackers to redirect operations to files outside the exported rsync module. Attackers with local filesystem access can exploit the timing window between path resolution and syscall execution by swapping symlinks to apply sender-supplied permissions, ownership, timestamps, or filenames to arbitrary files outside the intended module boundary on rsync daemons configured with 'use chroot = no'. (CVE-2026-43619)

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: Critical

ID: 315596

File Name: unpatched_CVE_2026_43619.nasl

Version: 1.11

Type: Local

Agent: unix

Family: Misc.

Published: 5/20/2026

Updated: 7/5/2026

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

Risk Information

VPR

Risk Factor: Medium

Score: 4.3

Percentile: 53.59

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5.8

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

CVSS Score Source: CVE-2026-43619

CVSS v3

Risk Factor: Critical

Base Score: 9.1

Temporal Score: 8.3

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

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

Vulnerability Information

CPE: cpe:/o:centos:centos:7, p-cpe:/a:centos:centos:rsync-daemon, p-cpe:/a:redhat:enterprise_linux:rsync-daemon, cpe:/o:redhat:enterprise_linux:7, cpe:/o:redhat:enterprise_linux:9, p-cpe:/a:redhat:enterprise_linux:rsync, cpe:/o:redhat:enterprise_linux:6, cpe:/o:centos:centos:8, p-cpe:/a:centos:centos:rsync, p-cpe:/a:redhat:enterprise_linux:rsync-rrsync, p-cpe:/a:centos:centos:rsync-rrsync, cpe:/o:redhat:enterprise_linux:8

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: 5/20/2026

Reference Information

CVE: CVE-2026-43619

Detections

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