The SslHandler in Netty before 3.9.2 allows remote attackers to cause a denial of service…
Priority LOW 30CWE-119Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · Partial
- Fix status
- Fixed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA and GitHub. Impact type from CWE-119 and the CVSS impact.
Summary
The SslHandler in Netty before 3.9.2 allows remote attackers to cause a denial of service (infinite loop and CPU consumption) via a crafted SSLv2Hello message.
Why it matters now
EPSS 0.04222 91st percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed io.netty:netty-handler (Maven): 3.9.2
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
| — | io.netty:netty-handler (Maven) | before 3.9.2 | 3.9.2 | Patch available | GHSA-9959-6p3m-wxpc |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
- io.netty:netty-handler (Maven) Vendor— Affected before 3.9.2 Fixed in 3.9.2 Patch available GHSA-9959-6p3m-wxpc
CPE configurations NVD · 15
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:netty:netty:*:*:*:*:*:*:*:* | up to 3.9.1.1 | Vulnerable | netty |
| cpe:2.3:a:netty:netty:3.6.0:*:*:*:*:*:*:* | 3.6.0 | Vulnerable | netty |
| cpe:2.3:a:netty:netty:3.6.1:*:*:*:*:*:*:* | 3.6.1 | Vulnerable | netty |
| cpe:2.3:a:netty:netty:3.6.2:*:*:*:*:*:*:* | 3.6.2 | Vulnerable | netty |
| cpe:2.3:a:netty:netty:3.6.3:*:*:*:*:*:*:* | 3.6.3 | Vulnerable | netty |
| cpe:2.3:a:netty:netty:3.6.4:*:*:*:*:*:*:* | 3.6.4 | Vulnerable | netty |
| cpe:2.3:a:netty:netty:3.6.5:*:*:*:*:*:*:* | 3.6.5 | Vulnerable | netty |
| cpe:2.3:a:netty:netty:3.6.6:*:*:*:*:*:*:* | 3.6.6 | Vulnerable | netty |
| cpe:2.3:a:netty:netty:3.6.7:*:*:*:*:*:*:* | 3.6.7 | Vulnerable | netty |
| cpe:2.3:a:netty:netty:3.6.8:*:*:*:*:*:*:* | 3.6.8 | Vulnerable | netty |
- cpe:2.3:a:netty:netty:*:*:*:*:*:*:*:* Versions up to 3.9.1.1 Vulnerable ·netty
- cpe:2.3:a:netty:netty:3.6.0:*:*:*:*:*:*:* Versions 3.6.0 Vulnerable ·netty
- cpe:2.3:a:netty:netty:3.6.1:*:*:*:*:*:*:* Versions 3.6.1 Vulnerable ·netty
- cpe:2.3:a:netty:netty:3.6.2:*:*:*:*:*:*:* Versions 3.6.2 Vulnerable ·netty
- cpe:2.3:a:netty:netty:3.6.3:*:*:*:*:*:*:* Versions 3.6.3 Vulnerable ·netty
- cpe:2.3:a:netty:netty:3.6.4:*:*:*:*:*:*:* Versions 3.6.4 Vulnerable ·netty
- cpe:2.3:a:netty:netty:3.6.5:*:*:*:*:*:*:* Versions 3.6.5 Vulnerable ·netty
- cpe:2.3:a:netty:netty:3.6.6:*:*:*:*:*:*:* Versions 3.6.6 Vulnerable ·netty
- cpe:2.3:a:netty:netty:3.6.7:*:*:*:*:*:*:* Versions 3.6.7 Vulnerable ·netty
- cpe:2.3:a:netty:netty:3.6.8:*:*:*:*:*:*:* Versions 3.6.8 Vulnerable ·netty
Show 5 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:netty:netty:3.7.0:*:*:*:*:*:*:* | 3.7.0 | Vulnerable | netty |
| cpe:2.3:a:netty:netty:3.8.0:*:*:*:*:*:*:* | 3.8.0 | Vulnerable | netty |
| cpe:2.3:a:netty:netty:3.8.1:*:*:*:*:*:*:* | 3.8.1 | Vulnerable | netty |
| cpe:2.3:a:netty:netty:3.9.0:*:*:*:*:*:*:* | 3.9.0 | Vulnerable | netty |
| cpe:2.3:a:netty:netty:3.9.1:*:*:*:*:*:*:* | 3.9.1 | Vulnerable | netty |
- cpe:2.3:a:netty:netty:3.7.0:*:*:*:*:*:*:* Versions 3.7.0 Vulnerable ·netty
- cpe:2.3:a:netty:netty:3.8.0:*:*:*:*:*:*:* Versions 3.8.0 Vulnerable ·netty
- cpe:2.3:a:netty:netty:3.8.1:*:*:*:*:*:*:* Versions 3.8.1 Vulnerable ·netty
- cpe:2.3:a:netty:netty:3.9.0:*:*:*:*:*:*:* Versions 3.9.0 Vulnerable ·netty
- cpe:2.3:a:netty:netty:3.9.1:*:*:*:*:*:*:* Versions 3.9.1 Vulnerable ·netty
Remediation
- Fix · GHSA-9959-6p3m-wxpc io.netty:netty-handler (Maven) Fixed in 3.9.2 Advisory →
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
Not affected: 10 products
- Red Hat BPM Suite 6
- Red Hat JBoss BRMS 6
- Red Hat JBoss Enterprise Application Platform 5
- Red Hat JBoss Enterprise Application Platform 6
- Red Hat JBoss Fuse Service Works 6
- Red Hat JBoss Portal 5
- Red Hat JBoss Portal 6
- Red Hat Satellite 6
- Red Hat Software Collections
- Red Hat Subscription Asset Manager
Timeline
- 2026-10-02 Threatist record created from CVE-2014-3488
- 2026-10-03 Alias added: GHSA-9959-6p3m-wxpc
References
Advisory 2
More Netty vulnerabilities
- TI-2023-23979 The HTTP/2 protocol allows a denial of service (server resource consumption) because… KEVCVSS 3.1HIGH 7.5
- TI-2026-30861 Netty: HTTP/1.0 TE+CL Coexistence Bypasses Smuggling Sanitization CVSS 3.1CRITICAL 9.8
- TI-2026-30864 Netty: HttpClientCodec response desynchronization CVSS 3.1CRITICAL 9.1
- 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-2014-3488 · CVE Program
- CVE-2014-3488 · NVD
- FIRST EPSS
- GHSA-9959-6p3m-wxpc · GitHub Advisory Database · CC BY 4.0
- CVE-2014-3488 · Red Hat security data · CC BY 4.0
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