CVE-2026-10846

HIGH EPSS 4.3%
Published Jun 10, 20262w ago · Modified Jun 17, 20261w ago
8.2 CVSS 4.0
High
Find Similar
Published Jun 10, 2026 2w ago
Last Modified Jun 17, 2026 1w ago

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 Details

Base Score
8.2
Exploitability
—
Impact
—
Vector string
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope X

Threat Intelligence

EPSS Exploit Probability
4.3% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-346

Affected Products 1

VendorProductVersionRange
nlnetlabsldns*≥1.2.0  –  <1.9.1

References 2

  • openwall.com http://www.openwall.com/lists/oss-security/2026/06/10/2
    Mailing ListPatchThird Party Advisory
  • nlnetlabs.nl https://www.nlnetlabs.nl/downloads/ldns/CVE-2026-10846.txt
    Vendor Advisory

Remediation

  • openwall.com http://www.openwall.com/lists/oss-security/2026/06/10/2
    Mailing ListPatchThird Party Advisory