Description
Netty is an asynchronous, event-driven network application framework. From 4.2.0.Final to 4.2.13.Final , Netty's epoll transport fails to detect and close TCP connections that receive a RST after being half-closed, leading to stale channels that are never cleaned up and, in some code paths, a 100% CPU busy-loop in the event loop thread. This vulnerability is fixed in 4.2.13.Final.
Affected products
netty: netty
References3
- github.com/netty/netty/security/advisories/GHSA-rwm7-x88c-3g2p MitigationVendor Advisory
- github.com/netty/netty/commit/0ec3d97fab376e243d328ac95fbd288ba… Patch
- github.com/netty/netty/pull/16689 Issue TrackingPatch
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: 36 · as of 14 November 2026
- CWE
- CWE-772
Could this be exploited in your environment?
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