{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-11788", "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "state": "PUBLISHED", "assignerShortName": "redhat", "dateReserved": "2026-06-09T12:57:59.740Z", "datePublished": "2026-06-09T13:02:53.715Z", "dateUpdated": "2026-06-09T13:02:53.715Z"}, "containers": {"cna": {"title": "389-ds-base: 389-ds-base: null pointer dereference in deref control plugin ber parser", "metrics": [{"other": {"content": {"value": "Moderate", "namespace": "https://access.redhat.com/security/updates/classification/"}, "type": "Red Hat severity rating"}}, {"cvssV3_1": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 5.9, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "format": "CVSS"}], "descriptions": [{"lang": "en", "value": "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 memory pressure."}], "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:/o: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:enterprise_linux: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:enterprise_linux: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:/o: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:/o:redhat:enterprise_linux:9"]}], "references": [{"url": "https://access.redhat.com/security/cve/CVE-2026-11788", "tags": ["vdb-entry", "x_refsource_REDHAT"]}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2485423", "name": "RHBZ#2485423", "tags": ["issue-tracking", "x_refsource_REDHAT"]}, {"url": "https://redhat.atlassian.net/browse/PSIRTSUPT-7600"}], "datePublic": "2026-04-16T00:00:00.000Z", "problemTypes": [{"descriptions": [{"cweId": "CWE-476", "description": "NULL Pointer Dereference", "lang": "en", "type": "CWE"}]}], "x_redhatCweChain": "CWE-476: NULL Pointer Dereference", "workarounds": [{"lang": "en", "value": "Disable the deref plugin (most effective): dsconf <instance> plugin deref disable; systemctl restart dirsrv@<instance>. Disable anonymous access (nsslapd-allow-anonymous-access=off) to raise the bar from pre-auth to authenticated exploitation. Configure memory limits as defense-in-depth: set nsslapd-maxbersize and nsslapd-conntablesize, and deploy in a cgroup with memory limits."}], "timeline": [{"lang": "en", "time": "2026-04-16T00:00:00.000Z", "value": "Reported to Red Hat."}, {"lang": "en", "time": "2026-04-16T00:00:00.000Z", "value": "Made public."}], "providerMetadata": {"orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "shortName": "redhat", "dateUpdated": "2026-06-09T13:02:53.715Z"}, "x_generator": {"engine": "cvelib 1.8.0"}}}}

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{"cveTags": [], "descriptions": [{"lang": "en", "value": "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 memory pressure."}], "id": "CVE-2026-11788", "lastModified": "2026-06-09T14:42:21.530", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 5.9, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 2.2, "impactScore": 3.6, "source": "[email protected]", "type": "Primary"}]}, "published": "2026-06-09T14:16:36.940", "references": [{"source": "[email protected]", "url": "https://access.redhat.com/security/cve/CVE-2026-11788"}, {"source": "[email protected]", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2485423"}, {"source": "[email protected]", "url": "https://redhat.atlassian.net/browse/PSIRTSUPT-7600"}], "sourceIdentifier": "[email protected]", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-476"}], "source": "[email protected]", "type": "Primary"}]}

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