CVE-2026-80225
MEDIUMCVSS 5.3Description
In NLnetLabs Unbound up to and including 1.26.0, a degradation of service vulnerability is present in the TCP/DoT reading procedure where there is no limit on consecutive reads. A malicious actor that can stream and sustain a rate of distinct uncached names over the TCP/DoT connection, monopolizes a single worker's entire event loop for as long as its writes stay ahead of the drain.
Timeline
Published:September 16th, 2026 9:17 AM
Last modified:September 23rd, 2026 7:57 PM
CVSS Scoring
CVSS v3: 5.3 (MEDIUM)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Affected Software
From NVD CPE configuration data
Vendors
nlnetlabs
Products
unbound
Weaknesses (CWE)
References & Reports
Advisories, patches, and third-party reports
Source: NIST NVD · Data may lag official sources by up to one minute