{"cve":"CVE-2016-4970","nvd":{"published":"2017-04-13T14:59:01.823","modified":"2026-06-17T00:48:31.653","status":"Modified","description":"handler/ssl/OpenSslEngine.java in Netty 4.0.x before 4.0.37.Final and 4.1.x before 4.1.1.Final allows remote attackers to cause a denial of service (infinite loop).","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":["CWE-835"],"references":["http://netty.io/news/2016/06/07/4-0-37-Final.html","http://netty.io/news/2016/06/07/4-1-1-Final.html","http://rhn.redhat.com/errata/RHSA-2017-0179.html","http://rhn.redhat.com/errata/RHSA-2017-1097.html","http://www.securityfocus.com/bid/96540"],"products":["apache:cassandra","netty:netty","redhat:jboss_data_grid","redhat:jboss_middleware_text-only_advisories"],"source":"nvd","synced_at":"2026-10-19T20:42:09.859288039+00:00"},"epss":{"cve":"CVE-2016-4970","score":0.11259,"percentile":0.95968,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-rv63-gqm8-9w8q","url":"https://osv.dev/vulnerability/GHSA-rv63-gqm8-9w8q","summary":"Loop with Unreachable Exit Condition in Netty","modified":"2024-02-16T08:13:46.004283Z","packages":[{"ecosystem":"Maven","name":"io.netty:netty-handler","purl":"pkg:maven/io.netty/netty-handler","ranges":[">=4.0.0.Alpha1 <4.0.37.Final"],"fixed":["4.0.37.Final"]},{"ecosystem":"Maven","name":"io.netty:netty-handler","purl":"pkg:maven/io.netty/netty-handler","ranges":[">=4.1.0.Beta1 <4.1.1.Final"],"fixed":["4.1.1.Final"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}