Detections
Analytics

Echo: unbound: security update to 1.25.2

low Tenable Cloud Security Plugin ID 460867

Description

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

 - In NLnet Labs Unbound 1.6.0 up to and including 1.25.1, the 'view_local_data' and 'view_local_datas'
 commands of 'unbound-control' create a bare local zones tree for an already configured named view when the
 view is configured with no local data to begin with. However, the creation through the control interface
 omits adding the default-protected zones (e.g., RFC 1918 reverse, AS112 zones, .onion, .localhost). Once
 the local zone tree exists without the defaults, every query for a default-protected name from a client
 mapped to that view escapes to the public DNS via the iterator instead of being answered locally,
 bypassing local policy expectations. (CVE-2026-55708)

Solution

Update the unbound library and its related packages to version 1.25.2 or later.

See Also

https://advisory.echohq.com/cve/CVE-2026-55708

Plugin Details

Severity: Low

ID: 460867

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Low

Score: 2.1

Percentile: 8.1

CVSS v2

Risk Factor: Low

Base Score: 2.9

Temporal Score: 2.1

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

CVSS Score Source: CVE-2026-55708

CVSS v3

Risk Factor: Low

Base Score: 3.1

Temporal Score: 2.7

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

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

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 7/23/2026

Vulnerability Publication Date: 7/22/2026

Reference Information

CVE: CVE-2026-55708