What is CVE-2026-55708?

CVE-2026-55708 is a low-severity vulnerability in Nlnet Labs Unbound, classified under Initialization of a Resource with an Insecure Default. CVSS score: 3.1/10. Published 2026-07-22.

How severe is CVE-2026-55708?

Low severity. CVSS v3 base score is 3.1 out of 10.

RCE in Nlnet Labs Unbound

CVE-2026-55708

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 loca…

CVSS v3 metric

CVSS v3 base score 3.1 (Low). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:L/I:L/A:N.

Affected products

Nlnet Labs Unbound — versions 1.6.0

Weakness classification (CWE)

CWE-1188 — Initialization of a Resource with an Insecure Default

References

sep@nlnetlabs.nl (vendor-advisory)

Frequently asked questions

What is CVE-2026-55708?: CVE-2026-55708 is a low-severity vulnerability in Nlnet Labs Unbound, classified under Initialization of a Resource with an Insecure Default. CVSS score: 3.1/10. Published 2026-07-22.
How severe is CVE-2026-55708?: Low severity. CVSS v3 base score is 3.1 out of 10.