CVE-2026-55708

LOW
INFO Priority: 0.01 BB Relevance: 16/100
Published: 2026-07-22 Modified: 2026-10-24 First seen: 2026-10-29 Status: active

Attack Surface

Low Complexity

CVSS Vector Breakdown

AV: Local
AC: Low
PR: High
UI: Required
S: Unchanged
C: Low
I: Low
A: None

Description

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.

Weakness Classification (1)

Affected Software (1)

VendorProductVersion
nlnetlabs unbound 1.6.0 – 1.25.2

References & Advisories (1)

Bug Bounty Relevance

16 / 100
✓ Low complexity

CVSS Score

3.1 / 10.0 v3.1
CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:L/I:L/A:N

EPSS — Exploitation Probability

0.16%
Raw Score 0.001600
Percentile 5.2%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00160
2026-10-28
0.00160

Intelligence Sources

nvd ref →