{"id":"CVE-2020-25692","title":"A NULL pointer dereference was found in OpenLDAP server and was fixed in openldap 2.4.55, during a request for renaming RDNs","summary":"A NULL pointer dereference was found in OpenLDAP server and was fixed in openldap 2.4.55, during a request for renaming RDNs. An unauthenticated attacker could remotely crash the slapd process by sending a specially crafted request, caus…","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-476"],"vendor":"openldap","product":"openldap","affected":["openldap < 2.4.55","enterprise_linux = 5.0","enterprise_linux = 6.0","enterprise_linux = 7.0","cloud_backup","solidfire_baseboard_management_controller_firmware"],"patched":["openldap 2.4.55"],"published":"2020-12-08","updated":"2026-10-14","sourceUpdated":"2026-10-14T10:17:33.013","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2020-25692","references":[{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1894567","label":"secalert@redhat.com"},{"url":"https://security.netapp.com/advisory/ntap-20210108-0006/","label":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1894567","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://security.netapp.com/advisory/ntap-20210108-0006/","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":0.02209,"epssPercentile":0.82135,"ingestedAt":"2026-10-14T10:25:41.181Z","slug":"CVE-2020-25692","body":"## Overview\n\nA NULL pointer dereference was found in OpenLDAP server and was fixed in openldap 2.4.55, during a request for renaming RDNs. An unauthenticated attacker could remotely crash the slapd process by sending a specially crafted request, causing a Denial of Service.\n\n## Affected\n\n- `openldap < 2.4.55`\n- `enterprise_linux = 5.0`\n- `enterprise_linux = 6.0`\n- `enterprise_linux = 7.0`\n- `cloud_backup`\n- `solidfire_baseboard_management_controller_firmware`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `openldap 2.4.55`","depth":"twilight","depthScore":42,"depthScoreParts":{"impact":41.3,"likelihood":0.4,"exploitation":0,"ransomware":0},"changes":[]}