Security Advisory

CVE-2026-45673

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-06-12 14:16:03

Last updated 2026-06-12 16:05:32

Assigner GitHub_M

CVSS score 6.8

State PUBLISHED

Description

Netty is a network application framework for development of protocol servers and clients. Prior to versions 4.1.135.Final and 4.2.15.Final, Netty's DNS resolver uses a predictable PRNG for generating DNS transaction IDs and defaults to a static UDP source port. This combination reduces the entropy of DNS queries, enabling DNS Cache Poisoning (Kaminsky attack). Versions 4.1.135.Final and 4.2.15.Final patch the issue.

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