CVE-2026-45674 HIGH

CVE-2026-45674: Netty Vulnerable to DNS Cache Poisoning via Missing Bailiwick Checks in CNAME Records

Vendor Netty
Product netty
Weakness CWE-345
Published June 12, 2026
Last update June 30, 2026
View on NVD All CVEs

CVSS base score

8.7/10
Attack vector Network
Attack complexity High
Privileges required None
User interaction None
Confidentiality High
Integrity High

CVSS vector

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

What the vulnerability does

01Description

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 DnsResolveContext fails to validate the origin (bailiwick) of CNAME records in DNS responses. Versions 4.1.135.Final and 4.2.15.Final patch the issue.

Key dates

02Disclosure timeline

June 12, 2026 CVE published
June 30, 2026 Record updated