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VULNERABILITIES

CVE-2026-44249 Details

Description

Netty is a network application framework for development of protocol servers and clients. In netty-handler prior to versions 4.1.135.Final and 4.2.15.Final, an attacker can bypass IPv6 subnet rules due to an incorrect masking operation in IpSubnetFilterRule.compareTo(). Valid public IP addresses can bypass the restrictions. Versions 4.1.135.Final and 4.2.15.Final patch the issue.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: redhat-SADPCVSS-B:8.1 HIGHVector:CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URLSource(s)Tag(s)
https://access.redhat.com/errata/RHSA-2026:26017 redhat-SADP
https://access.redhat.com/errata/RHSA-2026:26018 redhat-SADP
https://access.redhat.com/errata/RHSA-2026:26586 redhat-SADP
https://access.redhat.com/errata/RHSA-2026:28573 redhat-SADP
https://access.redhat.com/errata/RHSA-2026:34608 redhat-SADP

see all 26 references

Weakness Enumeration

CWE-IDCWE NameSource
CWE-1287Improper Validation of Specified Type of Inputredhat-SADP
CWE-284Improper Access Control[email protected]
CWE-697Incorrect Comparison[email protected]

Affected Products

ProductVersions
netty netty
< 4.1.135
>= 4.2.0, < 4.2.15

CPE

  • cpe:2.3:a:netty:netty:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

32 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-44249
NVD Published Date:
Jun 11, 2026
NVD Last Modified:
Sep 18, 2026
Source:
[email protected]
CVE-2026-44249 Details - Not Deferred