RHEL 8 : rsync (RHSA-2026:74095)

critical Nessus Plugin ID 353418

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Synopsis

The remote Red Hat host is missing one or more security updates.

Description

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:74095 advisory.

The rsync utility enables the users to copy and synchronize files locally or across a network.
Synchronization with rsync is fast because rsync only sends the differences in files over the network instead of sending whole files. The rsync utility is also used as a mirroring tool.

Security Fix(es):

* rsync: rsync 2.3.3 < 3.5.0 Path Traversal via --partial-dir/--backup-dir Symlink (CVE-2026-70460)

* rsync: rsync: Arbitrary file deletion via malicious file list (CVE-2026-53789)

* rsync: rsync < 3.5.0 Command Injection via Multiple Code Paths (CVE-2026-53790)

* rsync: rsync: Memory corruption via crafted file entries (CVE-2026-70458)

* rsync: rsync: Denial of Service via handshake stall (CVE-2026-70464)

* rsync: rsync: Local Privilege Escalation via Symlink Following (CVE-2026-53803)

* rsync: rsync: Unauthorized File Access via Symlink Module Root (CVE-2026-53784)

* rsync: rsync: Authorization bypass via `auth users` directive parsing (CVE-2026-70463)

* rsync: rsync 3.1.0 < 3.5.0 Access Control Bypass via DNS Resolution Failure (CVE-2026-70452)

* rsync: rsync: Arbitrary file write via --temp-dir or --link-dest options (CVE-2026-53795)

* rsync: rsync: Heap Out-of-Bounds Write via crafted argument list (CVE-2026-70456)

* rsync: rsync < 3.5.0 Path Confinement Bypass via /./ Boundary Marker in Chroot Mode (CVE-2026-53793)

* rsync: rsync: Denial of Service via Algorithmic Complexity (CVE-2026-70453)

* rsync: rsync: Information disclosure and denial of service via crafted files-from entry (CVE-2026-70461)

* rsync: rsync: Arbitrary File Read via Symlink Following (CVE-2026-53802)

* rsync: rsync: Arbitrary file write via path traversal in --relative mode (CVE-2026-53785)

* rsync: rsync: Directory escape via TOCTOU race condition in rrsync (CVE-2026-53783)

Bug Fix(es) and Enhancement(s):

* Fix latest CVEs in rsync in RHEL8 (JIRA:RHEL-256903)

* rsync-3.1.3-27.el8_10 regression: rsync daemon rejects legitimate cross-device symlinks with EXDEV when use chroot = no (JIRA:RHEL-239553)

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 these issues but has instead relied only on the application's self-reported version number.

Solution

Update the affected rsync and / or rsync-daemon packages.

Plugin Details

Severity: Critical

ID: 353418

File Name: redhat-RHSA-2026-74095.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Red Hat Local Security Checks

Published: 9/30/2026

Updated: 9/30/2026

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: 58.18

Vendor

Vendor Severity: Important

CVSS v2

Risk Factor: High

Base Score: 9.4

Temporal Score: 7.4

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

CVSS Score Source: CVE-2026-53789

CVSS v3

Risk Factor: High

Base Score: 8.1

Temporal Score: 7.3

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

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

CVSS v4

Risk Factor: Critical

Base Score: 9.2

Threat Score: 8.2

Threat Vector: CVSS:4.0/E:P

Vector: CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS Score Source: CVE-2026-70460

Vulnerability Information

CPE: cpe:/o:redhat:enterprise_linux:8, cpe:/o:redhat:rhel_eus:8.10, p-cpe:/a:redhat:enterprise_linux:rsync-daemon, p-cpe:/a:redhat:enterprise_linux:rsync

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 9/30/2026

Vulnerability Publication Date: 8/13/2026

Reference Information

CVE: CVE-2026-53783, CVE-2026-53784, CVE-2026-53785, CVE-2026-53789, CVE-2026-53790, CVE-2026-53793, CVE-2026-53795, CVE-2026-53802, CVE-2026-53803, CVE-2026-70452, CVE-2026-70453, CVE-2026-70456, CVE-2026-70458, CVE-2026-70460, CVE-2026-70461, CVE-2026-70463, CVE-2026-70464

CWE: 22, 59, 636, 770, 78, 787, 863

RHSA: 2026:74095

Detections

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