CVE-2026-45674

HIGH 8.7

Netty Vulnerable to DNS Cache Poisoning via Missing Bailiwick Checks in CNAME Records

CVSS Score

8.7

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-345
Vendor	netty
Product	netty
Published	Jun 12, 2026
Last Updated	Jul 21, 2026

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CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

None

Affected Versions

netty / netty

>= 4.2.0.Final, < 4.2.15.Final < 4.1.135.Final

References

NVD ↗ CVE.org ↗ EPSS Data ↗