Detections
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Echo: rsync: security update to 3.5.0+ds1-1

critical Tenable Cloud Security Plugin ID 461878

Description

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

 - rsync 3.1.0 before 3.5.0 contains an access control bypass vulnerability that allows remote attackers to
 circumvent hosts deny rules by inducing DNS resolution failures during hostname-based access control
 evaluation. When a DNS lookup for a hostname-based deny rule fails, the daemon skips the rule rather than
 defaulting to a deny decision, enabling attackers who can trigger DNS failures to bypass module-level IP
 access controls and gain unauthorized access to restricted module file trees. (CVE-2026-70452)

Solution

Update the rsync library and its related packages to version 3.5.0+ds1-1 or later.

See Also

https://advisory.echohq.com/cve/CVE-2026-70452

Plugin Details

Severity: Critical

ID: 461878

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Medium

Score: 4.3

Percentile: 53.51

CVSS v2

Risk Factor: High

Base Score: 7.1

Temporal Score: 5.3

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

CVSS Score Source: CVE-2026-70452

CVSS v3

Risk Factor: High

Base Score: 7.4

Temporal Score: 6.4

Vector: CVSS:3.0/AV:N/AC:H/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:H/AT:N/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-2026-70452

IAVA: 2026-A-0906