7.5

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

Analyzed
AliasesUBUNTU-CVE-2025-58057DEBIAN-CVE-2025-58057CGA-247x-h3jc-45fm
Published 03-09-2025Last modified 04-09-2025

Vulnerability summary

CVE-2025-58057 is a high (CVSS 7.5) vulnerability in netty. EPSS estimates a 0.63% chance of exploitation in the next 30 days, higher than 50.2% of scored vulnerabilities. 1 public exploit is recorded.

Priority
Routine

Not severe (CVSS 6.9, network access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
7.5/10
010
High · v3.1 (NVD)
EPSS score
0.63%
0%100%
Low · +0.03 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits1github

Advisory lineage

Upstream 0 · Downstream 4 · Related 54
DLA-4519-1DSA-6160-1OPENSUSE-SU-2025:15520-1SUSE-SU-2025:03114-1CGA-2Q6X-J784-7H79CGA-2V4W-PR95-P9MQ

Timeline

  1. 03-09-2025
    PublishedVulnerability first disclosed.
  2. 04-09-2025
    Last modifiedVulnerability information updated.

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.

CVSS metrics

9 scores · 7 sources · 2 versions

EPSS trend

Probability

0.63%

Chance of exploitation in the next 30 days

Percentile

50%

Versus all other CVEs

30-day change

Increase +0.03 pp

From 0.60% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

1 found
  • githubUnverified

    Netty

    Maturity: poc

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Chainguard200 products
  • akhq< 0.26.0-r3 | < 0.26.0-r4
  • apache-activemq-artemis< 2.42.0-r8
  • apache-activemq-artemis-compat< 2.42.0-r8
  • apache-hop< 2.16.0-r0
  • apache-hop-fips< 2.16.0-r0

1 vendor · 200 products · Showing 200 of 426

References

9 links