# CVE-2026-44249: eap8-eap-product-conf-parent: Netty is a network application framework for development of protocol servers and clients

CVE-2026-44249 is fixed in 6 products on 1 platform, first by RHSA-2026:49700, released June 12, 2026. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2026-44249
- Priority: High
- CVSS: 8.1 (important)
- EPSS: 0.0099
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jun 11, 2026

## 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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | eap8-eap-product-conf-parent RHEL 10 | 801.7.1-1.GA_redhat_00001.1.el10eap | [RHSA-2026:49700](https://patchblox.com/security/data/fix/linux/rhsa-2026-49700.md) | Jun 12, 2026 |
| Linux | eap8-netty RHEL 10 | 4.1.135-1.Final_redhat_00001.1.el10eap | [RHSA-2026:49700](https://patchblox.com/security/data/fix/linux/rhsa-2026-49700.md) | Jun 12, 2026 |
| Linux | eap8-netty-transport-native-epoll RHEL 10 | 4.1.135-1.Final_redhat_00001.1.el10eap | [RHSA-2026:49700](https://patchblox.com/security/data/fix/linux/rhsa-2026-49700.md) | Jun 12, 2026 |
| Linux | eap8-wildfly RHEL 10 | 8.1.7.1-1.GA_redhat_00004.1.el10eap | [RHSA-2026:49700](https://patchblox.com/security/data/fix/linux/rhsa-2026-49700.md) | Jun 12, 2026 |
| Linux | netty sles 15.7 | 4.1.135-150200.4.50.1 | [SUSE-SU-2026:2802-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-2802-1.md) | Jul 8, 2026 |
| Linux | netty-tcnative sles 15.6 | 2.0.79-150200.3.45.1 | [SUSE-SU-2026:2802-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-2802-1.md) | Jul 8, 2026 |
| Linux | netty-tcnative sles 15.7 | 2.0.79-150200.3.45.1 | [SUSE-SU-2026:2802-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-2802-1.md) | Jul 8, 2026 |

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Data as of 2026-11-08T13:06:02Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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