Detections
Analytics

Echo: rsync: security update to 3.5.0

critical Tenable Cloud Security Plugin ID 457324

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - rsync daemon before 3.5.0 contains an IP address spoofing vulnerability that allows unauthenticated remote
 attackers to bypass IP-based access controls by sending a crafted PROXY protocol header with a forged
 source address. Attackers who can connect directly to the rsync daemon can inject a spoofed source IP in
 the PROXY protocol header to circumvent hosts allow/deny rules, gaining unauthorized access that would
 otherwise be blocked based on their real source address. (CVE-2026-53791)

Solution

Update the rsync library and its related packages to version 3.5.0 or later.

See Also

https://advisory.echohq.com/cve/CVE-2026-53791

Plugin Details

Severity: Critical

ID: 457324

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Medium

Score: 4.3

Percentile: 53.52

CVSS v2

Risk Factor: High

Base Score: 9.4

Temporal Score: 7

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

CVSS Score Source: CVE-2026-53791

CVSS v3

Risk Factor: Critical

Base Score: 9.1

Temporal Score: 7.9

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:O/RC:C

CVSS v4

Risk Factor: Critical

Base Score: 9.1

Threat Score: 6.9

Threat Vector: CVSS:4.0/E:U

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

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 8/13/2026

Vulnerability Publication Date: 8/13/2026

Reference Information

CVE: CVE-2026-53791

IAVA: 2026-A-0906