# CVE-2025-58057: Netty's BrotliDecoder is vulnerable to DoS via zip bomb style attack

> CVE-2025-58057: Netty's BrotliDecoder is vulnerable to DoS via zip bomb style attack. CVSS 7.5 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2025-58057
Last updated: 2026-10-19T17:10:00Z

- Published: 2025-09-03 21:46 UTC · Updated: 2026-10-19 17:10 UTC · Assigner: GitHub\_M
- CVSS: 7.5 (CVSS 3.1) · Severity: High · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS: 0.63%, 50th percentile (scored 2026-10-25)
- CISA KEV: no
- CWE: CWE-409

## Description

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.

## Affected vendors and products

- netty: netty

## Tracked companies

- [Jira](https://rewindex.com/company/jira.md)

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2025-58057)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2025-58057)
- [https://github.com/netty/netty/commit/9d804c54ce962408ae6418255a83a13924f7145d](https://github.com/netty/netty/commit/9d804c54ce962408ae6418255a83a13924f7145d)
- [https://github.com/netty/netty/security/advisories/GHSA-3p8m-j85q-pgmj](https://github.com/netty/netty/security/advisories/GHSA-3p8m-j85q-pgmj)

---

_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


---
Canonical: https://rewindex.com/cve/CVE-2025-58057 · Markdown: https://rewindex.com/cve/CVE-2025-58057.md · JSON: https://rewindex.com/api/v1/cves/CVE-2025-58057 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T02:16:21.871Z