CVEvulnerability

CVE-2026-45673

6.8 MEDIUM Published 2026-06-12 Modified 2026-06-17 Official page ↗
Status
Analyzed
Published
2026-06-12
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
6.8 MEDIUM — CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:N
Weaknesses
CWE-330, CWE-340

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.

Affected configurations

• netty netty (< 4.1.135) • netty netty (>= 4.2.0 < 4.2.15)

Related

Weakness · CWE (2)

  • CWE-330 Use of Insufficiently Random Values weakness
  • CWE-340 Generation of Predictable Numbers or Identifiers weakness

References