{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-42577","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-04-28T17:26:12.085Z","datePublished":"2026-05-13T18:00:28.744Z","dateUpdated":"2026-05-14T15:39:44.314Z"},"containers":{"cna":{"title":"Netty: epoll transport denial of service via RST on half-closed TCP connection","problemTypes":[{"descriptions":[{"cweId":"CWE-772","lang":"en","description":"CWE-772: Missing Release of Resource after Effective Lifetime","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"}}],"references":[{"name":"https://github.com/netty/netty/security/advisories/GHSA-rwm7-x88c-3g2p","tags":["x_refsource_CONFIRM"],"url":"https://github.com/netty/netty/security/advisories/GHSA-rwm7-x88c-3g2p"},{"name":"https://github.com/netty/netty/pull/16689","tags":["x_refsource_MISC"],"url":"https://github.com/netty/netty/pull/16689"},{"name":"https://github.com/netty/netty/commit/0ec3d97fab376e243d328ac95fbd288ba0f6e22d","tags":["x_refsource_MISC"],"url":"https://github.com/netty/netty/commit/0ec3d97fab376e243d328ac95fbd288ba0f6e22d"}],"affected":[{"vendor":"netty","product":"netty","versions":[{"version":">= 4.2.0.Final, < 4.2.13.Final","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-05-13T18:00:28.744Z"},"descriptions":[{"lang":"en","value":"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."}],"source":{"advisory":"GHSA-rwm7-x88c-3g2p","discovery":"UNKNOWN"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-05-14T15:38:58.623257Z","id":"CVE-2026-42577","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-05-14T15:39:44.314Z"}}]}}