8.2

CVE-2026-10846: nlnet labs ldns Origin Validation Error

CVSS: 8.2v4.0HighAnalyzed
AliasesSUSE-SU-2026:22167-1SUSE-SU-2026:2461-1SUSE-SU-2026:2462-1
Published 10-06-2026Last modified 10-06-2026
Open JSON

Vulnerability summary

CVE-2026-10846 is a high (CVSS 8.2) Origin Validation Error vulnerability in nlnet labs ldns. EPSS estimates a 0.15% chance of exploitation in the next 30 days, higher than 3.5% of scored vulnerabilities.

Overall risk
33/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.2/10
010
High · v4.0 (CVE.org)
EPSS score
0.15%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 0 · Related 1
USN-8449-1

Timeline

  1. 10-06-2026
    PublishedVulnerability first disclosed.
  2. 10-06-2026
    Last modifiedVulnerability information updated.

Description

NLnet Labs ldns 1.2.0 up to and including versions 1.9.0, when used in applications as (stub) resolver over UDP, lacks matching the query destination address and port with the response source address and port. Furthermore not the query ID, neither the question of the query is matched with that of the response. This makes applications, that use ldns for (stub) resolver functionality over UDP, vulnerable for off-path poisoning attacks. The drill tool, which is shipped with ldns, suffers from this vulnerability.

CVSS metrics

7 scores · 5 sources · 2 versions

EPSS trend

Probability

0.15%

Chance of exploitation in the next 30 days

Percentile

4%

Versus all other CVEs

30-day change

0.00 pp

From 0.15% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.15%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Suse15 products
  • ldns&distro=SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS< 1.7.0-150000.4.11.1
  • ldns&distro=SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS< 1.7.0-150000.4.11.1
  • ldns&distro=SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS< 1.7.0-150000.4.11.1
  • ldns&distro=SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS< 1.7.0-150000.4.11.1
  • ldns&distro=SUSE Linux Enterprise Module for Basesystem 15 SP7< 1.8.3-150600.3.3.1
Redhat11 products
  • ldns< 0:1.7.0-23.el8_10 | < 0:1.8.3-18.el10_2.1 | < 0:1.7.1-12.el9_8.1 | < 0:1.8.3-18.el10_0.1 | < 0:1.7.1-11.el9_4.1 | < 0:1.7.1-12.el9_6.1 | < 0:1.7.1-11.el9_2.1
  • ldns-debuginfo< 0:1.7.0-23.el8_10 | < 0:1.8.3-18.el10_2.1 | < 0:1.7.1-12.el9_8.1
  • ldns-debugsource< 0:1.7.0-23.el8_10 | < 0:1.8.3-18.el10_2.1 | < 0:1.7.1-12.el9_8.1
  • ldns-devel< 0:1.7.0-23.el8_10 | < 0:1.8.3-18.el10_2.1 | < 0:1.7.1-12.el9_8.1
  • ldns-doc< 0:1.7.0-23.el8_10 | < 0:1.8.3-18.el10_2.1 | < 0:1.7.1-12.el9_8.1
Opensuse2 products
  • ldns&distro=openSUSE Leap 16.0< 1.8.4-160000.3.1
  • ldns&distro=openSUSE Tumbleweed< 1.9.2-1.1
Debian1 product
  • ldnsAll versions (No fix recorded) | < 1.9.2-1
Nlnet labs1 product
  • ldns≥ 1.2.0, < 1.9.1
Nlnetlabs1 product
  • ldns≥ 1.2.0, < 1.9.1
Ubuntu1 product
  • ldns< 1.6.17-8ubuntu0.1+esm2 | < 1.7.0-3ubuntu4.1+esm1 | < 1.7.0-4.1ubuntu1+esm2 | < 1.7.1-2ubuntu4+esm2 | < 1.8.3-2ubuntu0.1~esm1 | All versions (No fix recorded) | < 1.8.4-2ubuntu0.26.04.1~esm1

7 vendors · 32 products

References

29 links
Show all 29 references