{"id":"CVE-2020-25709","title":"A flaw was found in OpenLDAP","summary":"A flaw was found in OpenLDAP. This flaw allows an attacker who can send a malicious packet to be processed by OpenLDAP’s slapd server, to trigger an assertion failure. The highest threat from this vulnerability is to system availability.","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-617"],"vendor":"openldap","product":"openldap","affected":["openldap < 2.4.56","debian_linux = 9.0","debian_linux = 10.0","mac_os_x >= 10.14.0, < 10.14.6","mac_os_x >= 10.15, < 10.15.7","mac_os_x = 10.14.6","mac_os_x = 10.15.7","macos >= 11.0, < 11.0.1","jboss_core_services"],"patched":["openldap 2.4.56","mac_os_x 10.15.7","macos 11.0.1"],"published":"2021-05-18","updated":"2026-10-14","sourceUpdated":"2026-10-14T10:17:33.163","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2020-25709","references":[{"url":"http://seclists.org/fulldisclosure/2021/Feb/14","label":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1899675","label":"secalert@redhat.com"},{"url":"https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E","label":"secalert@redhat.com"},{"url":"https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E","label":"secalert@redhat.com"},{"url":"https://lists.debian.org/debian-lts-announce/2020/12/msg00008.html","label":"secalert@redhat.com"},{"url":"https://security.netapp.com/advisory/ntap-20210716-0003/","label":"secalert@redhat.com"},{"url":"https://support.apple.com/kb/HT212147","label":"secalert@redhat.com"},{"url":"https://www.debian.org/security/2020/dsa-4792","label":"secalert@redhat.com"},{"url":"http://seclists.org/fulldisclosure/2021/Feb/14","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1899675","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2020/12/msg00008.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://security.netapp.com/advisory/ntap-20210716-0003/","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://support.apple.com/kb/HT212147","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.debian.org/security/2020/dsa-4792","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-398330.html","label":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"}],"tags":["nvd"],"epss":0.02858,"epssPercentile":0.86399,"ingestedAt":"2026-10-14T10:25:41.189Z","slug":"CVE-2020-25709","body":"## Overview\n\nA flaw was found in OpenLDAP. This flaw allows an attacker who can send a malicious packet to be processed by OpenLDAP’s slapd server, to trigger an assertion failure. The highest threat from this vulnerability is to system availability.\n\n## Affected\n\n- `openldap < 2.4.56`\n- `debian_linux = 9.0`\n- `debian_linux = 10.0`\n- `mac_os_x >= 10.14.0, < 10.14.6`\n- `mac_os_x >= 10.15, < 10.15.7`\n- `mac_os_x = 10.14.6`\n- `mac_os_x = 10.15.7`\n- `macos >= 11.0, < 11.0.1`\n- `jboss_core_services`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `openldap 2.4.56`\n- `mac_os_x 10.15.7`\n- `macos 11.0.1`","depth":"twilight","depthScore":42,"depthScoreParts":{"impact":41.3,"likelihood":0.6,"exploitation":0,"ransomware":0},"changes":[]}