Technology · Maven
io.netty:netty-handler (Maven) vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 13 vulnerabilities in io.netty:netty-handler (Maven): 0 in the last 7 days and 2 in the last 90 days, 1 of them critical and 0 exploited in the wild. The most recent, CVE-2026-75596, was published on 19 August 2026. Nothing was published in the last eight weeks.
- Last 7 days
- 0
- Last 90 days
- 2
- Critical, all time
- 1
- Exploited in the wild
- 0
About io.netty:netty-handler (Maven)
A Netty ecosystem component providing SSL/TLS and other data security handlers for network applications.
Latest io.netty:netty-handler (Maven) vulnerabilities
- CVE-2026-75596: Netty is an asynchronous, event-driven network application framework. Prior to 4.1.137.Final and 4.2.17.Final, the default…highCVSS 7.5EPSS 0.4%
- CVE-2026-75595: Netty SNI routing bypass via fragmented TLS ClientHellocriticalCVSS 9.1EPSS 0.3%
- CVE-2026-50010: Netty disabled TLS hostname verification in netty-handlerhighCVSS 7.5EPSS 0.7%
- CVE-2026-45416: Netty excessive memory allocation in SNIHandlerhighCVSS 7.5EPSS 1.6%
- CVE-2026-44249: Netty IPv6 subnet filter bypass in netty-handlerhighCVSS 8.1EPSS 1.3%
- CVE-2025-24970: SslHandler doesn't correctly validate packets which can lead to native crash when using native SSLEnginelowCVSS 3.1EPSS 2.2%
- CVE-2023-4586: Withdrawn Advisory: Netty-handler does not validate host names by defaultlowCVSS 3.1EPSS 0.5%
- CVE-2023-34462: netty-handler SniHandler 16MB allocationlowCVSS 3.1EPSS 2.5%
- CVE-2016-4970: Loop with Unreachable Exit Condition in NettylowCVSS 3.1EPSS 11.3%
- CVE-2014-3488: Denial of service in NettyinfoEPSS 4.2%
- CVE-2020-11612: Denial of Service in NettylowCVSS 3.1EPSS 9.4%
- CVE-2020-7238: HTTP Request Smuggling in NettylowCVSS 3.1EPSS 3.6%
- CVE-2019-20445: HTTP Request Smuggling in NettyinfoEPSS 13.5%
Most severe io.netty:netty-handler (Maven) vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- CVE-2026-75595: Netty SNI routing bypass via fragmented TLS ClientHellocriticalCVSS 9.1EPSS 0.3%
- CVE-2026-44249: Netty IPv6 subnet filter bypass in netty-handlerhighCVSS 8.1EPSS 1.3%
- CVE-2026-45416: Netty excessive memory allocation in SNIHandlerhighCVSS 7.5EPSS 1.6%
- CVE-2026-50010: Netty disabled TLS hostname verification in netty-handlerhighCVSS 7.5EPSS 0.7%
- CVE-2026-75596: Netty is an asynchronous, event-driven network application framework. Prior to 4.1.137.Final and 4.2.17.Final, the default…highCVSS 7.5EPSS 0.4%
- CVE-2016-4970: Loop with Unreachable Exit Condition in NettylowCVSS 3.1EPSS 11.3%
- CVE-2020-11612: Denial of Service in NettylowCVSS 3.1EPSS 9.4%
- CVE-2020-7238: HTTP Request Smuggling in NettylowCVSS 3.1EPSS 3.6%
- CVE-2023-34462: netty-handler SniHandler 16MB allocationlowCVSS 3.1EPSS 2.5%
- CVE-2025-24970: SslHandler doesn't correctly validate packets which can lead to native crash when using native SSLEnginelowCVSS 3.1EPSS 2.2%
Vulnerabilities per week
Nothing was published in the last eight weeks. The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 17 Aug 2026 | 2 | 1 | |
| 24 Aug 2026 | 0 | 0 | |
| 31 Aug 2026 | 0 | 0 | |
| 7 Sep 2026 | 0 | 0 | |
| 14 Sep 2026 | 0 | 0 | |
| 21 Sep 2026 | 0 | 0 | |
| 28 Sep 2026 | 0 | 0 | |
| 5 Oct 2026 | 0 | 0 | |
| 12 Oct 2026 | 0 | 0 | |
| 19 Oct 2026 | 0 | 0 | |
| 26 Oct 2026 | 0 | 0 | |
| 2 Nov 2026 | 0 | 0 | |
| 9 Nov 2026 | 0 | 0 |
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[](https://junglewise.ai/threats/technologies/io-netty-netty-handler)<a href="https://junglewise.ai/threats/technologies/io-netty-netty-handler"><img src="https://junglewise.ai/threats/technologies/io-netty-netty-handler/badge.svg" alt="io.netty:netty-handler (Maven) vulnerabilities" /></a>How this is built
Junglewise Threat Intelligence collects vulnerabilities from NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories, and matches each one to the technologies and vendors it affects. Dates are the date a vulnerability was published, in UTC.
The pages are rebuilt from the database every hour. Frozen weekly and monthly reports never change once published, so they can be cited.
Use this data
The same data is at https://junglewise.ai/threats/technologies/io-netty-netty-handler.json, and this page as text at https://junglewise.ai/threats/technologies/io-netty-netty-handler.md, for scripts and language models. It is free to reuse under CC BY 4.0 with a link back to this page.
Cite as: Junglewise Threat Intelligence, "io.netty:netty-handler (Maven) vulnerabilities", https://junglewise.ai/threats/technologies/io-netty-netty-handler, 9 November 2026.