Description
Netty is an asynchronous, event-driven network application framework. Prior to 4.1.137.Final and 4.2.17.Final, io.netty.handler.codec.sctp.SctpMessageCompletionHandler limits incomplete messages and fragment counts but not maxBufferedBytes, allowing unauthenticated peers to exhaust memory with large SCTP fragments. This issue is fixed in versions 4.1.137.Final and 4.2.17.Final.
Affected products
netty: netty
References6
- github.com/netty/netty/security/advisories/GHSA-2qj4-mmr9-4v2f Vendor Advisory
- github.com/netty/netty/commit/1b5abc6443b63726c72cdd285af2feb7d… Patch
- github.com/netty/netty/pull/17213 Issue TrackingPatch
- github.com/netty/netty/pull/17217 Issue TrackingPatch
- github.com/netty/netty/releases/tag/netty-4.1.137.Final Release Notes
- github.com/netty/netty/releases/tag/netty-4.2.17.Final Release Notes
Metrics
- CVSS 3.1
-
7.5
HIGH
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - EPSS — exploit probability
- 0% percentile: 31 · as of 11 November 2026
- CWE
- CWE-400
Could this be exploited in your environment?
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