{"cve":"CVE-2019-20892","nvd":{"published":"2020-06-25T10:15:10.667","modified":"2026-06-17T02:31:23.573","status":"Modified","description":"net-snmp before 5.8.1.pre1 has a double free in usm_free_usmStateReference in snmplib/snmpusm.c via an SNMPv3 GetBulk request. NOTE: this affects net-snmp packages shipped to end users by multiple Linux distributions, but might not affect an upstream release.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":6.5},"cwes":["CWE-415"],"references":["http://www.openwall.com/lists/oss-security/2020/06/25/4","https://bugs.launchpad.net/ubuntu/+source/net-snmp/+bug/1877027","https://bugzilla.redhat.com/show_bug.cgi?id=1663027","https://github.com/net-snmp/net-snmp/commit/5f881d3bf24599b90d67a45cae7a3eb099cd71c9","https://security.gentoo.org/glsa/202008-12"],"products":["net-snmp:net-snmp","oracle:zfs_storage_appliance_kit"],"source":"nvd","synced_at":"2026-10-19T21:06:22.076270124+00:00"},"epss":{"cve":"CVE-2019-20892","score":0.02315,"percentile":0.8342,"date":"2026-10-31"},"kev":null,"osv":[],"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."]}