Netty, an asynchronous, event-driven network application framework, has a vulnerability starting in version 4.1.91.Final and prior to version 4.1.118.Final. When a special crafted packet is received via SslHandler it doesn't correctly handle validation of such a packet in all cases which can lead to a native crash. Version 4.1.118.Final contains a patch. As workaround its possible to either disable the usage of the native SSLEngine or change the code manually.
CVE-2025-24970
“—” beside the score: it is equal to NVD's CVSS score.
This high-severity CVE scores 7.5 under NVD CVSS v3. EPSS exploit probability: 2.2% (82nd percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.
- CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
A fix is available — apply it.
- CVSS v3
- 7.5
- EG Score
- 7.5HIGHmedium confidence
- EG Risk
- 65EG Risk 65/100
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computed (value × EchelonGraph’s weight)Severity75% × 45%The EG Score, 7.5 of 10.Exploitation40% × 40%EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.Automatability100% × 15%CISA's SSVC Automatable value: yes (Vulnrichment).SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).Exploitation public PoC (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high. - EPSS PROB
- 2.2%
- EPSS %ILE
- 82nd
- KEV
- Not listed
SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Attend at high (mission-essential systems).
A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
Exploitation public PoC (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table
BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; 60 days if it is not.
In CISA KEV no (CISA's KEV catalog) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it
Published
February 10, 2025
Last Modified
September 5, 2025
References (5)
- security-advisories@githubhttps://github.com/netty/netty/commit/87f40725155b2f89adfde68c7732f97c153676c4Patch
- security-advisories@github · CISA-ADPhttps://github.com/netty/netty/security/advisories/GHSA-4g8c-wm8x-jfhwVendor Advisory
- CVE Programhttps://security.netapp.com/advisory/ntap-20250221-0005/Third Party Advisory
- CVE Programhttps://www.vicarius.io/vsociety/posts/cve-2025-24970-netty-vulnerability-detectionExploit · Third Party Advisory
- CVE Programhttps://www.vicarius.io/vsociety/posts/cve-2025-24970-netty-vulnerability-mitigationExploit · Mitigation · Third Party Advisory
Vendor Advisories for CVE-2025-24970(19)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
- RHSA-2025:12511Red Hat Product SecurityHigh
Red Hat Security Advisory: Streams for Apache Kafka 3.0.0 release and security update
- RHSA-2025:9922Red Hat Product SecurityHigh
Red Hat Security Advisory: Streams for Apache Kafka 2.9.1 release and security update
- RHSA-2025:8761Red Hat Product SecurityHigh
Red Hat Security Advisory: HawtIO 4.2.0 for Red Hat build of Apache Camel 4 Release and security update.
- RHSA-2025:8258Red Hat Product SecurityHigh
Red Hat Security Advisory: Red Hat build of Quarkus 3.20.1 release
- RHSA-2025:4549Red Hat Product SecurityHigh
Red Hat Security Advisory: Red Hat JBoss Enterprise Application Platform 7.4.22 security update
- RHSA-2025:4550Red Hat Product SecurityHigh
Red Hat Security Advisory: Red Hat JBoss Enterprise Application Platform 7.4.22 security update
- RHSA-2025:4548Red Hat Product SecurityHigh
Red Hat Security Advisory: Red Hat JBoss Enterprise Application Platform 7.4.22 security update
- RHSA-2025:4552Red Hat Product SecurityHigh
Red Hat Security Advisory: Red Hat JBoss Enterprise Application Platform 7.4.22 security update
- +11 more
Patch Availability(10)
| Vendor / Ecosystem | Fix (by version range) / Patch | Released | Source |
|---|---|---|---|
| redhat | io.netty/netty-handler | 2025-08-01 | redhat |
| redhat | eap7-wildfly-elytron-0:1.15.25-1.Final_redhat_00001.1.el8eap | 2025-05-06 | redhat |
| redhat | eap7-wildfly-elytron-0:1.15.25-1.Final_redhat_00001.1.el7eap | 2025-05-06 | redhat |
| redhat | eap7-wildfly-elytron-0:1.15.25-1.Final_redhat_00001.1.el9eap | 2025-05-06 | redhat |
| redhat | patch | 2025-05-06 | redhat |
| redhat | patch | 2025-04-01 | redhat |
| redhat | eap7-wildfly-0:7.4.21-3.GA_29548_redhat_00001.1.el7eap | 2025-04-01 | redhat |
| redhat | patch | 2025-03-27 | redhat |
| redhat | eap8-wildfly-0:8.0.6-15.GA_redhat_00009.1.el9eap | 2025-03-27 | redhat |
| redhat | rhoai/odh-modelmesh-rhel8:v2.18.0-1740989471 | 2025-03-10 | redhat |
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
Affected Packages
(1 across 1 ecosystem)
Maven(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| io.netty:netty-handler | 4.1.100.Final ... 4.1.99.Final (27 versions) |
| — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 11× in last 7d / 30× in last 30d)
Each row is a time one of our pipelines fetched, updated or re-scored this CVE. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.
Showing the most recent 91 of 167 refreshes on record for this CVE.
A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 9 repeat rows among the latest 100 are merged into the row they repeat. The 76 oldest rows on record are not shown and were not checked, so the counts can still include repeats.
- 2026-10-15 16:30 UTCEPSS rescoreEPSS 2.2% · 82nd percentile
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- 2026-10-12 17:16 UTCEG score recompute
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- 2026-10-11 20:48 UTCEG score recompute
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- 2026-10-11 13:47 UTCEPSS rescoreEPSS 2.2% · 81st percentile
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- 2026-09-22 14:47 UTCEPSS rescoreEPSS 2.2% · 81st percentile
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Related CVEs(same product + same vendor + same CWE)
Same product
10 shownMaven:io.netty:netty-handler
Same vendor
10 shownredhat:RHSA-2025:12511 · redhat:RHSA-2025:1884 · redhat:RHSA-2025:3465
Frequently asked(5)
What is CVE-2025-24970?
When was the CVE record for CVE-2025-24970 published?
Is CVE-2025-24970 actively exploited?
What is the CVSS score of CVE-2025-24970?
How do I remediate CVE-2025-24970?
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2025-24970
Is Your Infrastructure Affected by CVE-2025-24970?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.