SslHandler doesn't correctly validate packets which can lead to native crash when using native SSLEngine
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Partial Red Hat: 19 fixed, 11 without a fix
Attack profile from CVSS 3.1 · CNA. Fix status from CNA, GitHub and Red Hat.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| netty | netty | 4.1.91.Final – 4.1.117.Final | — | No fix listed | CNA |
| — | io.netty:netty-handler (Maven) | 4.1.91.Final to before 4.1.118.Final | 4.1.118.Final | Patch available | GHSA-4g8c-wm8x-jfhw |
- netty Vendornetty Affected 4.1.91.Final – 4.1.117.Final Fixed in — No fix listed CNA
- io.netty:netty-handler (Maven) Vendor— Affected 4.1.91.Final to before 4.1.118.Final Fixed in 4.1.118.Final Patch available GHSA-4g8c-wm8x-jfhw
CPE configurations NVD · 5
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:netty:netty:*:*:*:*:*:*:*:* | 4.1.91 to before 4.1.118 | Vulnerable | netty |
| cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:linux:*:* | not specified by NVD | Vulnerable | NetApp |
| cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:vmware_vsphere:*:* | not specified by NVD | Vulnerable | NetApp |
| cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:windows:*:* | not specified by NVD | Vulnerable | NetApp |
| cpe:2.3:a:netapp:oncommand_insight:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | NetApp |
- cpe:2.3:a:netty:netty:*:*:*:*:*:*:*:* Versions 4.1.91 to before 4.1.118 Vulnerable ·netty
- cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:linux:*:* Versions not specified by NVD Vulnerable ·NetApp
- cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:vmware_vsphere:*:* Versions not specified by NVD Vulnerable ·NetApp
- cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:windows:*:* Versions not specified by NVD Vulnerable ·NetApp
- cpe:2.3:a:netapp:oncommand_insight:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
Remediation
- Fix · GHSA-4g8c-wm8x-jfhw io.netty:netty-handler (Maven) Fixed in 4.1.118.Final Advisory →
Red Hat 19 advisories
- RHSA-2025:12511 Released 2025-08-01 · Red Hat rating ImportantStreams for Apache Kafka 3.0.0 release and security update
- Streams for Apache Kafka 3.0.0
- RHSA-2025:9922 Released 2025-06-30 · Red Hat rating ImportantStreams for Apache Kafka 2.9.1 release and security update
- Streams for Apache Kafka 2.9.1
- RHSA-2025:8761 Released 2025-06-10 · Red Hat rating ImportantHawtIO 4.2.0 for Red Hat build of Apache Camel 4 Release and security update.
- HawtIO HawtIO 4.2.0
Show 16 more Red Hat advisories
- RHSA-2025:8258 Released 2025-06-02 · Red Hat rating ImportantRed Hat build of Quarkus 3.20.1 release
- Red Hat build of Quarkus 3.20.1.redhat io.netty.netty-handler-4.1.119.Final-redhat-00005.jar
- RHSA-2025:4549 Released 2025-05-06 · Red Hat rating ImportantRed Hat JBoss Enterprise Application Platform 7.4.22 security update
- Red Hat JBoss EAP 7.4 for RHEL 8 eap7-apache-commons-io-2.16.1-1.redhat_00001.1.el8eap, eap7-hal-console-3.3.26-1.Final_redhat_00001.1.el8eap, eap7-ironjacamar-1.5.19-1.Final_redhat_00001.1.el8eap +27
- RHSA-2025:4550 Released 2025-05-06 · Red Hat rating ImportantRed Hat JBoss Enterprise Application Platform 7.4.22 security update
- Red Hat JBoss EAP 7.4 for RHEL 9 eap7-apache-commons-io-2.16.1-1.redhat_00001.1.el9eap, eap7-hal-console-3.3.26-1.Final_redhat_00001.1.el9eap, eap7-ironjacamar-1.5.19-1.Final_redhat_00001.1.el9eap +27
- RHSA-2025:4548 Released 2025-05-06 · Red Hat rating ImportantRed Hat JBoss Enterprise Application Platform 7.4.22 security update
- Red Hat JBoss EAP 7.4 for RHEL 7 Server eap7-apache-commons-io-2.16.1-1.redhat_00001.1.el7eap, eap7-hal-console-3.3.26-1.Final_redhat_00001.1.el7eap, eap7-ironjacamar-1.5.19-1.Final_redhat_00001.1.el7eap +26
- RHSA-2025:4552 Released 2025-05-06 · Red Hat rating ImportantRed Hat JBoss Enterprise Application Platform 7.4.22 security update
- Red Hat JBoss Enterprise Application Platform 7.4.22 commons-io.commons-io-2.16.1.redhat-00001.jar, io.netty.netty-common-4.1.119.Final-redhat-00004.jar, io.netty.netty-handler-4.1.119.Final-redhat-00004.jar +1
- RHSA-2025:3543 Released 2025-04-02 · Red Hat rating ImportantRed Hat Build of Apache Camel 4.8.5 for Spring Boot security update.
- Red Hat build of Apache Camel 4.8.5 for Spring Boot
- RHSA-2025:3540 Released 2025-04-02 · Red Hat rating ImportantRed Hat Integration Camel K 1.10.10 release and security update.
- RHINT Camel-K 1.10.10
- RHSA-2025:3465 Released 2025-04-01 · Red Hat rating ImportantRed Hat JBoss Enterprise Application Platform 7.4.21 security update
- Red Hat JBoss EAP 7.4 for RHEL 7 Server eap7-netty-4.1.119-1.Final_redhat_00004.1.el7eap, eap7-netty-all-4.1.119-1.Final_redhat_00004.1.el7eap, eap7-netty-buffer-4.1.119-1.Final_redhat_00004.1.el7eap +29
- Red Hat JBoss EAP 7.4 for RHEL 8 eap7-netty-4.1.119-1.Final_redhat_00004.1.el8eap, eap7-netty-all-4.1.119-1.Final_redhat_00004.1.el8eap, eap7-netty-buffer-4.1.119-1.Final_redhat_00004.1.el8eap +30
- Red Hat JBoss EAP 7.4 for RHEL 9 eap7-netty-4.1.119-1.Final_redhat_00004.1.el9eap, eap7-netty-buffer-4.1.119-1.Final_redhat_00004.1.el9eap, eap7-netty-codec-4.1.119-1.Final_redhat_00004.1.el9eap +29
- RHSA-2025:3467 Released 2025-04-01 · Red Hat rating ImportantRed Hat JBoss Enterprise Application Platform 7.4.21 security update
- Red Hat JBoss Enterprise Application Platform com.fasterxml.jackson.core.jackson-core-2.12.7.SP1-redhat-00001.jar, commons-beanutils.commons-beanutils-1.11.0.redhat-00001.jar, io.netty.netty-common-4.1.124.Final-redhat-00001.jar +3
- RHSA-2025:3358 Released 2025-03-27 · Red Hat rating ImportantRed Hat JBoss Enterprise Application Platform 8.0.6 security update
- Red Hat JBoss Enterprise Application Platform 8
- RHSA-2025:3357 Released 2025-03-27 · Red Hat rating ImportantRed Hat JBoss Enterprise Application Platform 8.0.6 security update
- Red Hat JBoss EAP 8.0 for RHEL 8 eap8-eap-product-conf-parent-800.6.1-1.GA_redhat_00001.1.el8eap, eap8-eap-product-conf-wildfly-ee-feature-pack-800.6.1-1.GA_redhat_00001.1.el8eap, eap8-netty-4.1.119-1.Final_redhat_00002.1.el8eap +21
- Red Hat JBoss EAP 8.0 for RHEL 9 eap8-eap-product-conf-parent-800.6.1-1.GA_redhat_00001.1.el9eap, eap8-eap-product-conf-wildfly-ee-feature-pack-800.6.1-1.GA_redhat_00001.1.el9eap, eap8-netty-4.1.119-1.Final_redhat_00002.1.el9eap +21
- RHSA-2025:2663 Released 2025-03-11 · Red Hat rating ImportantRed Hat Data Grid 8.5.3 security update
- Red Hat Data Grid
- RHSA-2025:2588 Released 2025-03-10 · Red Hat rating ImportantRHOAI 2.18.0 - Red Hat OpenShift AI
- Red Hat OpenShift AI 2.18 registry.redhat.io/rhoai/odh-dashboard-rhel8, registry.redhat.io/rhoai/odh-mm-rest-proxy-rhel8, registry.redhat.io/rhoai/odh-modelmesh-rhel8 +2
- RHSA-2025:2067 Released 2025-03-03 · Red Hat rating ImportantRed Hat Build of Apache Camel 4.8 for Quarkus 3.15 update is now available (RHBQ 3.15.3.SP1)
- Red Hat Build of Apache Camel 4.8 for Quarkus 3.15
- RHSA-2025:1884 Released 2025-02-27 · Red Hat rating ImportantRed Hat build of Quarkus 3.8.6.SP3 Security Update
- Red Hat build of Quarkus 3.8.6.SP3
- RHSA-2025:1885 Released 2025-02-27 · Red Hat rating ImportantRed Hat build of Quarkus 3.15.3.SP1 Security Update
- Red Hat build of Quarkus 3.15.3.SP1
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Cryostat 3 | Affected | No fix yet |
| Logging Subsystem for Red Hat OpenShift | Affected | No fix yet |
| OpenShift Serverless | Affected | No fix yet |
| Red Hat AMQ Broker 7 | Affected | No fix yet |
| Red Hat AMQ Clients | Affected | No fix planned: Will not fix |
| Red Hat Fuse 7 | Affected | No fix planned: Out of support scope |
| Red Hat Process Automation 7 | Affected | No fix planned: Out of support scope |
| Red Hat Single Sign-On 7 | Affected | No fix planned: Out of support scope |
| Red Hat build of Apicurio Registry 2 | Affected | No fix yet |
| Red Hat build of Debezium 2 | Affected | No fix planned: Will not fix |
| Red Hat build of OptaPlanner 8 | Affected | No fix planned: Will not fix |
| HawtIO HawtIO 4.2.0 | Fixed | RHSA-2025:8761 |
| RHINT Camel-K 1.10.10 | Fixed | RHSA-2025:3540 |
| Red Hat Build of Apache Camel 4.8 for Quarkus 3.15 | Fixed | RHSA-2025:2067 |
| Red Hat Data Grid | Fixed | RHSA-2025:2663 |
| Red Hat JBoss EAP 7.4 for RHEL 7 Server | Fixed | RHSA-2025:3465, RHSA-2025:4548 |
| Red Hat JBoss EAP 7.4 for RHEL 8 | Fixed | RHSA-2025:3465, RHSA-2025:4549 |
| Red Hat JBoss EAP 7.4 for RHEL 9 | Fixed | RHSA-2025:3465, RHSA-2025:4550 |
| Red Hat JBoss EAP 8.0 for RHEL 8 | Fixed | RHSA-2025:3357 |
| Red Hat JBoss EAP 8.0 for RHEL 9 | Fixed | RHSA-2025:3357 |
| Red Hat JBoss Enterprise Application Platform | Fixed | RHSA-2025:3467 |
| Red Hat JBoss Enterprise Application Platform 7.4.22 | Fixed | RHSA-2025:4552 |
| Red Hat JBoss Enterprise Application Platform 8 | Fixed | RHSA-2025:3358 |
| Red Hat OpenShift AI 2.18 | Fixed | RHSA-2025:2588 |
| Red Hat build of Apache Camel 4.8.5 for Spring Boot | Fixed | RHSA-2025:3543 |
| Red Hat build of Quarkus 3.15.3.SP1 | Fixed | RHSA-2025:1885 |
| Red Hat build of Quarkus 3.20.1.redhat | Fixed | RHSA-2025:8258 |
| Red Hat build of Quarkus 3.8.6.SP3 | Fixed | RHSA-2025:1884 |
| Streams for Apache Kafka 2.9.1 | Fixed | RHSA-2025:9922 |
| Streams for Apache Kafka 3.0.0 | Fixed | RHSA-2025:12511 |
Not affected: 9 products
- A-MQ Clients 2
- Red Hat JBoss Enterprise Application Platform
- Red Hat JBoss Enterprise Application Platform 7
- Red Hat JBoss Enterprise Application Platform 7.4.22
- Red Hat JBoss Enterprise Application Platform 8
- Red Hat JBoss Enterprise Application Platform Expansion Pack
- Red Hat OpenShift AI 2.18
- Red Hat build of Apicurio Registry 3
- Red Hat build of Quarkus 3.20.1.redhat
Timeline
- 2026-10-02 Threatist record created from CVE-2025-24970
- 2026-10-03 Alias added: GHSA-4g8c-wm8x-jfhw
- 2026-10-20 Fix available: Red Hat build of Quarkus 3.20.1.redhat · Red Hat
References
Exploit 2
Advisory 3
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- TI-2026-30859 Netty: DNS Codec Input Validation Bypass in Netty (Encoder + Decoder) CVSS 3.1CRITICAL 9.1
- TI-2026-40973 Netty: Missing CertificateID Validation in OCSP Response Allows Replay Attacks CVSS 3.1CRITICAL 9.1
- TI-2026-40972 Uncontrolled resource consumption in netty CVSS 3.1HIGH 7.5
Sources
- CVE-2025-24970 · CVE Program
- CVE-2025-24970 · NVD
- FIRST EPSS
- GHSA-4g8c-wm8x-jfhw · GitHub Advisory Database · CC BY 4.0
- CVE-2025-24970 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences