VULNERABILITY INTELLIGENCE

CVE-2026-44249

CVSS score8.1 HIGH
EPSS probability0.99%
CISA KEVNot currently listed
Published2026-06-11
Last modified2026-09-18
CVSS vectorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

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.

Weakness classification

  • CWE-284: Improper Access Control
  • CWE-697: Incorrect Comparison
  • CWE-1287: Improper Validation of Specified Type of Input

Primary references