{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-11884","assignerOrgId":"53f830b8-0a3f-465b-8143-3b8a9948e749","state":"PUBLISHED","assignerShortName":"redhat","dateReserved":"2026-06-10T13:55:27.884Z","datePublished":"2026-06-10T14:07:13.559Z","dateUpdated":"2026-11-05T16:22:55.109Z"},"containers":{"cna":{"title":"389-ds-base: 389-ds-base: heap buffer overflow in schema objectclass serialization due to missing oc_superior in size calculation","metrics":[{"other":{"content":{"value":"Moderate","namespace":"https://access.redhat.com/security/updates/classification/"},"type":"Red Hat severity rating"}},{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"HIGH","privilegesRequired":"HIGH","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H","version":"3.1"},"format":"CVSS"}],"descriptions":[{"lang":"en","value":"A heap buffer overflow flaw was found in 389 Directory Server. When serializing objectclass definitions, the oc_superior (SUP) field length is omitted from buffer size calculations in read_schema_dse() and schema_oc_to_string(), but the field is still written via strcat(). An attacker with Directory Manager privileges, or a compromised replication supplier, can trigger a server crash by creating objectclasses with long SUP values. This is an incomplete fix variant of CVE-2025-14905."}],"affected":[{"vendor":"Red Hat","product":"Red Hat Directory Server 11","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"redhat-ds:11/389-ds-base","defaultStatus":"affected","cpes":["cpe:/a:redhat:directory_server:11"]},{"vendor":"Red Hat","product":"Red Hat Directory Server 12","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"redhat-ds:12/389-ds-base","defaultStatus":"affected","cpes":["cpe:/a:redhat:directory_server:12"]},{"vendor":"Red Hat","product":"Red Hat Directory Server 13","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"389-ds-base","defaultStatus":"affected","cpes":["cpe:/a:redhat:directory_server:13"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 10","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"389-ds-base","defaultStatus":"affected","cpes":["cpe:/a:redhat:enterprise_linux:10"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 6","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"389-ds-base","defaultStatus":"unknown","cpes":["cpe:/o:redhat:rhel_els:6"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 7","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"389-ds-base","defaultStatus":"affected","cpes":["cpe:/o:redhat:rhel_els:7"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 8","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"389-ds-base","defaultStatus":"affected","cpes":["cpe:/a:redhat:enterprise_linux:8"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 9","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"389-ds-base","defaultStatus":"affected","cpes":["cpe:/a:redhat:enterprise_linux:9"]}],"references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-11884","tags":["vdb-entry","x_refsource_REDHAT"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2423624"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2484913","name":"RHBZ#2484913","tags":["issue-tracking","x_refsource_REDHAT"]}],"datePublic":"2026-06-04T20:32:00.000Z","problemTypes":[{"descriptions":[{"cweId":"CWE-122","description":"Heap-based Buffer Overflow","lang":"en","type":"CWE"}]}],"x_redhatCweChain":"CWE-122: Heap-based Buffer Overflow","workarounds":[{"lang":"en","value":"Restrict Directory Manager access. Audit replication agreements. Monitor cn=schema modifications for unusually long SUP values. Restrict LDAP replication traffic to trusted networks."}],"timeline":[{"lang":"en","time":"2026-04-16T00:00:00.000Z","value":"Reported to Red Hat."},{"lang":"en","time":"2026-06-04T20:32:00.000Z","value":"Made public."}],"credits":[{"lang":"en","value":"This issue was discovered by Ian Murphy (Red Hat)."}],"providerMetadata":{"orgId":"53f830b8-0a3f-465b-8143-3b8a9948e749","shortName":"redhat","dateUpdated":"2026-11-05T16:22:55.109Z"},"x_generator":{"engine":"cvelib 1.8.0"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-06-10T16:26:44.246925Z","id":"CVE-2026-11884","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-06-10T16:31:21.611Z"}}]}}