# DSA-5558-1: netty security update

DSA-5558-1, released November 18, 2023, fixes 1 CVE in netty. None of them is reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/fix/linux/dsa-5558-1
- Platform: Linux
- Released: Nov 18, 2023
- Priority: Routine (Closes CVE-2023-34462)
- CVEs: 1, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://security-tracker.debian.org/tracker/CVE-2023-34462

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [netty](https://patchblox.com/security/data/product/linux/netty.md) | Debian 11.6 (bullseye) | 1:4.1.48-4+deb11u2 |
| [netty](https://patchblox.com/security/data/product/linux/netty.md) | Debian 12.15 (bookworm) | 1:4.1.48-7+deb12u1 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2023-34462](https://patchblox.com/security/data/cve/CVE-2023-34462.md) | Routine | netty: Netty is an asynchronous event-driven network application framework for rapid development of maintainable high perfor... | 6.5 | 0.0246 |  |

---

Data as of 2026-11-07T06:34:28Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo