# libnetty-java 1:4.1.45-1ubuntu0.1~esm7: libnetty-java 1:4.1.45-1ubuntu0.1~esm7 for Ubuntu 20.04 LTS (focal)

libnetty-java 1:4.1.45-1ubuntu0.1~esm7, released December 15, 2025, fixes 2 CVEs in libnetty-java. None of them is reported as exploited. Patch Radar priority: High. The product is no longer supported.

- Web page: https://patchblox.com/security/fix/linux/ubuntu-focal-libnetty-java-1-4.1.45-1ubuntu0.1-esm7
- Platform: Linux
- Released: Dec 15, 2025
- Priority: High (Closes CVE-2025-55163, high severity)
- CVEs: 2, exploited: 0, on CISA KEV: 0

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [libnetty-java](https://patchblox.com/security/data/product/linux/libnetty-java.md) | Ubuntu 20.04 LTS (focal) | 1:4.1.45-1ubuntu0.1~esm7 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2025-55163](https://patchblox.com/security/data/cve/CVE-2025-55163.md) | High | netty: 'MadeYouReset' denial of serivce attack in the HTTP/2 protocol (bsc#1247991). | 7.5 | 0.0113 |  |
| [CVE-2025-67735](https://patchblox.com/security/data/cve/CVE-2025-67735.md) | Routine | netty: lack of URI sanitization in `HttpRequestEncoder` allows for CRLF injection through a request URI and | 6.5 | 0.0032 |  |

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Data as of 2026-11-11T13:47:35Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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