CVE-2026-45673 (GCVE-0-2026-45673)
Vulnerability from cvelistv5
Published
2026-06-12 14:16
Modified
2026-06-12 16:05
Severity ?
6.8 (Medium) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:N
CWE
  • CWE-330 - Use of Insufficiently Random Values
  • CWE-340 - Generation of Predictable Numbers or Identifiers
Summary
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.
References
Impacted products
Vendor Product Version
netty netty Version: >= 4.2.0.Final, < 4.2.15.Final
Version: < 4.1.135.Final
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