{"cve":"CVE-2019-17571","nvd":{"published":"2019-12-20T17:15:11.893","modified":"2026-06-17T02:24:11.027","status":"Modified","description":"Included in Log4j 1.2 is a SocketServer class that is vulnerable to deserialization of untrusted data which can be exploited to remotely execute arbitrary code when combined with a deserialization gadget when listening to untrusted network traffic for log data. This affects Log4j versions up to 1.2 up to 1.2.17.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8},"cwes":["CWE-502"],"references":["http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00022.html","https://lists.apache.org/thread.html/277b4b5c2b0e06a825ccec565fa65bd671f35a4d58e3e2ec5d0618e1%40%3Cdev.tika.apache.org%3E","https://lists.apache.org/thread.html/44491fb9cc19acc901f7cff34acb7376619f15638439416e3e14761c%40%3Cdev.tika.apache.org%3E","https://lists.apache.org/thread.html/479471e6debd608c837b9815b76eab24676657d4444fcfd5ef96d6e6%40%3Cdev.tika.apache.org%3E","https://lists.apache.org/thread.html/564f03b4e9511fcba29c68fc0299372dadbdb002718fa8edcc4325e4%40%3Cjira.kafka.apache.org%3E"],"products":["apache:bookkeeper","apache:log4j","canonical:ubuntu_linux","debian:debian_linux","netapp:oncommand_system_manager","netapp:oncommand_workflow_automation","opensuse:leap","oracle:application_testing_suite","oracle:communications_network_integrity","oracle:endeca_information_discovery_studio","oracle:financial_services_lending_and_leasing","oracle:mysql_enterprise_monitor","oracle:primavera_gateway","oracle:rapid_planning","oracle:retail_extract_transform_and_load","oracle:retail_service_backbone","oracle:weblogic_server"],"source":"nvd","synced_at":"2026-10-19T20:59:27.069234358+00:00"},"epss":{"cve":"CVE-2019-17571","score":0.6998,"percentile":0.99374,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-2qrg-x229-3v8q","url":"https://osv.dev/vulnerability/GHSA-2qrg-x229-3v8q","summary":"Deserialization of Untrusted Data in Log4j","modified":"2026-06-09T10:30:14.311375246Z","packages":[{"ecosystem":"Maven","name":"log4j:log4j","purl":"pkg:maven/log4j/log4j","ranges":[">=1.2 <=1.2.17"],"fixed":[]},{"ecosystem":"Maven","name":"org.zenframework.z8.dependencies.commons:log4j-1.2.17","purl":"pkg:maven/org.zenframework.z8.dependencies.commons/log4j-1.2.17","ranges":["2.0"],"fixed":[]}]}],"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."]}