7.5

CVE-2026-80225

Medienbericht

Possible degradation of service from continuous queries on the same TCP/DoT connection

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Nlnetlabs ≫ Unbound Version < 1.26.1
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EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.31% 0.241
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
NIST 7.5 3.9 3.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
sep@nlnetlabs.nl 5.3 3.9 1.4
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CWE-770 Allocation of Resources Without Limits or Throttling

The product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.

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VulnDex Intel
Media Report
17.09.2026 15:48
https://www.nlnetlabs.nl/downloads/unbound/CVE-2026-80225.txt
Patch
Vendor Advisory