CVE-2026-45673

MEDIUM SEVERITY

CVSS Score & Metrics

Base Score

6.8 / 10

Vector String

                                        CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:N                                    

Vulnerability 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.

Vulnerability Details

Published Date

June 08, 2026

Last Modified

June 17, 2026

CWE ID

CWE-330

Source

GitHub

Vendor

maven

Product

io.netty:netty-resolver-dns

External References

https://github.com/netty/netty/security/advisories/GHSA-xmv7-r254-6q78
https://github.com/netty/netty/releases/tag/netty-4.1.135.Final
https://github.com/netty/netty/releases/tag/netty-4.2.15.Final
https://github.com/advisories/GHSA-xmv7-r254-6q78

CVE-2026-45673

CVSS Score & Metrics

Vulnerability Description

Vulnerability Details

External References

Discussion (0)

Add Comment