{"id":"CVE-2026-11788","title":"A flaw was found in 389 Directory Server","summary":"A flaw was found in 389 Directory Server. The dereference control plugin does not check for allocation failure before using a BER structure, allowing an unauthenticated remote attacker to crash the LDAP server when the system is under me…","severity":"medium","cvss":5.9,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-476"],"vendor":"redhat","product":"directory_server","affected":["directory_server = 11.0","directory_server = 12.0","directory_server = 13.0","389_directory_server","enterprise_linux = 7.0","enterprise_linux = 8.0","enterprise_linux = 9.0","enterprise_linux = 10.0"],"published":"2026-06-09","updated":"2026-08-17","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-11788","references":[{"url":"https://access.redhat.com/errata/RHSA-2026:55421","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:55422","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:55425","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/security/cve/CVE-2026-11788","label":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2485423","label":"secalert@redhat.com"}],"tags":["nvd"],"epss":0.00561,"epssPercentile":0.44274,"ingestedAt":"2026-08-17T02:45:45.532Z","slug":"CVE-2026-11788","body":"## Overview\n\nA flaw was found in 389 Directory Server. The dereference control plugin does not check for allocation failure before using a BER structure, allowing an unauthenticated remote attacker to crash the LDAP server when the system is under memory pressure.\n\n## Affected\n\n- `directory_server = 11.0`\n- `directory_server = 12.0`\n- `directory_server = 13.0`\n- `389_directory_server`\n- `enterprise_linux = 7.0`\n- `enterprise_linux = 8.0`\n- `enterprise_linux = 9.0`\n- `enterprise_linux = 10.0`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":33,"depthScoreParts":{"impact":32.5,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}