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Fencer Vulns
medium 5.5

CVE-2025-25193 json

Denial of Service attack on windows app using Netty

published 2025-02-10 20 mo ago modified 2026-09-10 1 mo ago also EUVD-2025-4081 , GHSA-389x-839f-4rhx

cvss
5.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 33%
public exploits
0
none known

Summary

Netty, an asynchronous, event-driven network application framework, has a vulnerability in versions up to and including 4.1.118.Final. An unsafe reading of environment file could potentially cause a denial of service in Netty. When loaded on an Windows application, Netty attempts to load a file that does not exist. If an attacker creates such a large file, the Netty application crash. A similar issue was previously reported as CVE-2024-47535. This issue was fixed, but the fix was incomplete in that null-bytes were not counted against the input limit. Commit d1fbda62d3a47835d3fb35db8bd42ecc205a5386 contains an updated fix.

Patch / fix

  • maven io.netty:netty-common 4.1.118.Final
  • io.netty netty-common 4.1.118.Final
  • netty netty 4.1.118.Final
  • eap7-wildfly jboss enterprise application platform 7.4 7.4.22-2.GA_redhat_00001.1.el9eap
  • eap7-weld-ejb jboss enterprise application platform 7.4 3.1.11-1.Final_redhat_00001.1.el9eap
  • eap7-weld-jta jboss enterprise application platform 7.4 3.1.11-1.Final_redhat_00001.1.el9eap
  • eap7-weld-web jboss enterprise application platform 7.4 3.1.11-1.Final_redhat_00001.1.el9eap
  • eap7-weld-core jboss enterprise application platform 7.4 3.1.11-1.Final_redhat_00001.1.el9eap
  • eap7-hal-console jboss enterprise application platform 7.4 3.3.26-1.Final_redhat_00001.1.el9eap
  • eap7-ironjacamar jboss enterprise application platform 7.4 1.5.19-1.Final_redhat_00001.1.el9eap
  • eap7-weld-core-jsf jboss enterprise application platform 7.4 3.1.11-1.Final_redhat_00001.1.el9eap

red hat advisories RHSA-2025:4550RHSA-2025:4549RHSA-2025:4548RHSA-2025:3357

  • netty-tcnative SLES for SAP 15 SP5, SLES for SAP 15 SP4, SLES for SAP 15 SP3 +11 more 2.0.70-150200.3.25.1
  • netty SLE Module for Package Hub 15 SP6, openSUSE Leap 15.6 4.1.118-150200.4.29.2

suse advisories SUSE-SU-2025:0590-1

  • netty openSUSE Tumbleweed 4.1.118-1.1

opensuse advisories openSUSE-SU-2025:14765-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2025-25193 updated cvss 5.5

netty: Denial of Service attack on windows app using Netty

  • Red Hat Integration Camel K 1 netty-common
    affected: workaround, no fix planned “Currently, no mitigation is available for this vulnerability.”
  • Red Hat JBoss EAP 7.4 for RHEL 7 Server eap7-wildfly 7.4.22-2.GA_redhat_00001.1.el7eap, eap7-netty 4.1.119-1.Final_redhat_00004.1.el7eap, eap7-weld-ejb 3.1.11-1.Final_redhat_00001.1.el7eap, eap7-weld-jta 3.1.11-1.Final_redhat_00001.1.el7eap, eap7-weld-web 3.1.11-1.Final_redhat_00001.1.el7eap, eap7-weld-core 3.1.11-1.Final_redhat_00001.1.el7eap, +55 more
    fixed: vendor fix “Currently, no mitigation is available for this vulnerability.” RHSA-2025:4548
  • Red Hat JBoss EAP 7.4 for RHEL 8 eap7-wildfly 7.4.22-2.GA_redhat_00001.1.el8eap, eap7-netty 4.1.119-1.Final_redhat_00004.1.el8eap, eap7-weld-ejb 3.1.11-1.Final_redhat_00001.1.el8eap, eap7-weld-jta 3.1.11-1.Final_redhat_00001.1.el8eap, eap7-weld-web 3.1.11-1.Final_redhat_00001.1.el8eap, eap7-weld-core 3.1.11-1.Final_redhat_00001.1.el8eap, +57 more Red Hat JBoss EAP 7.4 for RHEL 9 eap7-wildfly 7.4.22-2.GA_redhat_00001.1.el9eap, eap7-netty 4.1.119-1.Final_redhat_00004.1.el9eap, eap7-weld-ejb 3.1.11-1.Final_redhat_00001.1.el9eap, eap7-weld-jta 3.1.11-1.Final_redhat_00001.1.el9eap, eap7-weld-web 3.1.11-1.Final_redhat_00001.1.el9eap, eap7-weld-core 3.1.11-1.Final_redhat_00001.1.el9eap, +56 more
    fixed: vendor fix “Currently, no mitigation is available for this vulnerability.” RHSA-2025:3465
  • Red Hat JBoss EAP 8.0 for RHEL 8 eap8-slf4j 2.0.16-2.redhat_00003.1.el8eap, eap8-slf4j-api 2.0.16-2.redhat_00003.1.el8eap, eap8-wildfly 8.0.6-15.GA_redhat_00009.1.el8eap, eap8-netty 4.1.119-1.Final_redhat_00002.1.el8eap, eap8-netty-codec 4.1.119-1.Final_redhat_00002.1.el8eap, eap8-wildfly-modules 8.0.6-15.GA_redhat_00009.1.el8eap, +18 more Red Hat JBoss EAP 8.0 for RHEL 9 eap8-slf4j 2.0.16-2.redhat_00003.1.el9eap, eap8-slf4j-api 2.0.16-2.redhat_00003.1.el9eap, eap8-wildfly 8.0.6-15.GA_redhat_00009.1.el9eap, eap8-netty 4.1.119-1.Final_redhat_00002.1.el9eap, eap8-netty-codec 4.1.119-1.Final_redhat_00002.1.el9eap, eap8-wildfly-modules 8.0.6-15.GA_redhat_00009.1.el9eap, +18 more
    fixed: vendor fix “Currently, no mitigation is available for this vulnerability.” RHSA-2025:3357
  • Red Hat JBoss Enterprise Application Platform netty-common 4.1.124.Final-redhat-00001
    fixed: vendor fix “Currently, no mitigation is available for this vulnerability.” RHSA-2025:3467
  • Red Hat JBoss Enterprise Application Platform 7.4.22 netty-common 4.1.119.Final-redhat-00004
    fixed: vendor fix “Currently, no mitigation is available for this vulnerability.” RHSA-2025:4552
  • Red Hat JBoss Enterprise Application Platform 8
    fixed: vendor fix “Currently, no mitigation is available for this vulnerability.” RHSA-2025:3358
  • Red Hat Streams for Apache Kafka 2.9.1
    fixed: vendor fix “Currently, no mitigation is available for this vulnerability.” RHSA-2025:9922
show 2 more
  • Red Hat Streams for Apache Kafka 3.0.0
    fixed: vendor fix “Currently, no mitigation is available for this vulnerability.” RHSA-2025:12511
  • Red Hat build of Quarkus netty-common Red Hat JBoss Enterprise Application Platform pom.xml, c3 0.6.0, c3 0.7.1, d3 5.9.2, fs 2.1.2, ip 2.0.0, +1550 more Red Hat JBoss Enterprise Application Platform 7.4.22 pom.xml, c3 0.6.0, c3 0.7.1, d3 5.9.2, fs 2.1.2, ip 2.0.0, +1558 more
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
partial
Assessed
20 mo ago

Exploit prediction

0.39% chance of exploitation in the next 30 days, higher than 33% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/netty/netty/security/advisories/GHSA-389x-839f-4rhx referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
GitHub 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
NVD 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected packages

ecosystem package affected fixed in
maven io.netty:netty-common
<4.1.118.Final
4.1.118.Final

Affected products

  • netty netty

Classification

Weakness
  • CWE-400 Uncontrolled Resource Consumption

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.