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Public proof of conceptFix available

CVE-2025-25193

A public proof of concept exists; no exploitation attested.

  • Published2025-02-10
  • Fixed in4.1.118
  • WeaknessCWE-400

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

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.

Timeline

dates in UTC
  1. 2025-02-1022:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-11-03 21:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2025-25193?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2025-25193?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD · OSV
Nettyversion to verify
BranchAffectedFixed in
4.1< 4.1.1184.1.118
netty-common
BranchAffectedFixed in
4.1< 4.1.118.Final4.1.118.Final

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Products declared by the CNA1 product

As GitHub_M, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

  • netty
    Affected
    • = <= 4.1.118no fix stated

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2025-02-10

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • apache-hiveCleanStartall versions · fixed in 3.1.3-r3
  • apache-hiveCleanStartall versions · fixed in 4.0.0-r0
  • apache-hiveCleanStartall versions · fixed in 4.2.0-r1
  • cassandra-reaper-fipsCleanStartall versions · fixed in 3.8.0-r3
  • cassandra-reaper-fipsCleanStartall versions · fixed in 3.6.1-r3
  • cassandra-reaper-fipsCleanStartall versions · fixed in 3.7.1-r4
  • cassandra-reaper-fipsCleanStartall versions · fixed in 3.8.0-r9
  • celeborn-0.5Chainguardall versions · fixed in 0.5.4-r26

93 more package ranges on OSV.dev

Full record on NVD

Fix

  1. Update Netty to 4.1.118

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
none listed
PoC-in-GitHub
Metasploit modules
none listed
Metasploit Framework

Sources

  • CISA-ADPSSVC decisionpoc2025-02-11
  • OpenCVESSVC decisionpoc—
  • CNACVSS 3.15.5known since 2026-10-23
  • NVDCVSS 3.15.5read 2026-10-23
  • CNAweakness (CWE)CWE-400known since 2026-10-23
  • FIRST EPSSEPSS score0.4 %2026-11-03
  • OSVaffected packages—
  • GitHub AdvisoriesadvisoryMODERATE2025-02-10

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Published
2025-02-10
Last Modified
2026-06-17
NVD status
Analyzed
GitHub Advisory
GHSA-389x-839f-4rhx

Frequently asked questions

What is CVE-2025-25193?

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.

Is CVE-2025-25193 actively exploited?

A proof-of-concept exploit exists for CVE-2025-25193, but active exploitation has not been confirmed at this time.

What is the CVSS score for CVE-2025-25193?

CVE-2025-25193 has a CVSS v3 base score of 5.5 (MEDIUM severity), with vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

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Sources for this record