---
cve: "CVE-2025-58057"
severity: "MEDIUM"
cvss: 6.9
epss: "60%"
vendor: "netty"
kev: false
exploited: false
published: "2025-09-04 10:42:32"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-05T21:20:37+02:00"
---

# CVE-2025-58057

> 6.9 MEDIUM · 🧪 PoC

## Beschreibung

Netty is an asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients. In netty-codec-compression versions 4.1.124.Final and below, and netty-codec versions 4.2.4.Final and below, when supplied with specially crafted input, BrotliDecoder and certain other decompression decoders will allocate a large number of reachable byte buffers, which can lead to denial of service. BrotliDecoder.decompress has no limit in how often it calls pull, decompressing data 64K bytes at a time. The buffers are saved in the output list, and remain reachable until OOM is hit. This is fixed in versions 4.1.125.Final of netty-codec and 4.2.5.Final of netty-codec-compression.

## CVSS-Vektor

```
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |

## Patch verfügbar (OSV)

- 56ea9763c6ac550f0f8ab7849ef0af21532643cb (Commit)
- 406a58fd36e351b299553b3ceba5708f40a6153d (Commit)

## Referenzen

- <https://github.com/netty/netty/security/advisories/GHSA-3p8m-j85q-pgmj>
- <https://github.com/netty/netty/commit/9d804c54ce962408ae6418255a83a13924f7145d>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2025-58057) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_