{"schema":"threatline.record/2","record":{"id":"CVE-2026-86344","aliases":[],"summary":"389-ds-base: 389-ds-base: unauthenticated worker-thread-pool exhaustion via completed-operation-then-incomplete-pdu connection requeue","details":"A flaw was found in 389-ds-base. An unauthenticated remote attacker can send a complete LDAP operation followed by the first bytes of an incomplete LDAPMessage on the same connection, causing the server to hand that connection to a second worker thread before the first worker's result is flushed. The second worker blocks until nsslapd-ioblocktimeout while holding the connection mutex, preventing delivery of the completed operation's result. Repeating this across a small number of connections proportional to the configured worker-thread pool size exhausts the entire pool under default configuration, denying service to all clients (anonymous and authenticated, plaintext and TLS) for as long as the attacker maintains the connections.","categories":["Operating systems"],"product":"Red Hat Directory Server 11","vendor":"Red Hat","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-86344","source_modified_at":"2026-10-02T18:22:47.877Z","fetched_at":"2026-10-23T18:52:38.922436Z","product":"Red Hat Directory Server 11","vendor":"Red Hat","versions":[],"defaultStatus":"affected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-86344","source_modified_at":"2026-10-02T18:22:47.877Z","fetched_at":"2026-10-23T18:52:38.922436Z","product":"Red Hat Directory Server 11","vendor":"Red Hat","versions":[],"defaultStatus":"affected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-86344","source_modified_at":"2026-10-02T18:22:47.877Z","fetched_at":"2026-10-23T18:52:38.922436Z","product":"Red Hat Directory Server 12","vendor":"Red Hat","versions":[],"defaultStatus":"affected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-86344","source_modified_at":"2026-10-02T18:22:47.877Z","fetched_at":"2026-10-23T18:52:38.922436Z","product":"Red Hat Directory Server 12","vendor":"Red Hat","versions":[],"defaultStatus":"affected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-86344","source_modified_at":"2026-10-02T18:22:47.877Z","fetched_at":"2026-10-23T18:52:38.922436Z","product":"Red Hat Directory Server 13","vendor":"Red Hat","versions":[],"defaultStatus":"affected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-86344","source_modified_at":"2026-10-02T18:22:47.877Z","fetched_at":"2026-10-23T18:52:38.922436Z","product":"Red Hat Enterprise Linux 10","vendor":"Red Hat","versions":[],"defaultStatus":"affected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-86344","source_modified_at":"2026-10-02T18:22:47.877Z","fetched_at":"2026-10-23T18:52:38.922436Z","product":"Red Hat Enterprise Linux 6","vendor":"Red Hat","versions":[],"defaultStatus":"unknown"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-86344","source_modified_at":"2026-10-02T18:22:47.877Z","fetched_at":"2026-10-23T18:52:38.922436Z","product":"Red Hat Enterprise Linux 7","vendor":"Red Hat","versions":[],"defaultStatus":"unknown"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-86344","source_modified_at":"2026-10-02T18:22:47.877Z","fetched_at":"2026-10-23T18:52:38.922436Z","product":"Red Hat Enterprise Linux 8","vendor":"Red Hat","versions":[],"defaultStatus":"affected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-86344","source_modified_at":"2026-10-02T18:22:47.877Z","fetched_at":"2026-10-23T18:52:38.922436Z","product":"Red Hat Enterprise Linux 8","vendor":"Red Hat","versions":[],"defaultStatus":"affected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-86344","source_modified_at":"2026-10-02T18:22:47.877Z","fetched_at":"2026-10-23T18:52:38.922436Z","product":"Red Hat Enterprise Linux 9","vendor":"Red Hat","versions":[],"defaultStatus":"affected"}],"fixed_versions":[],"cvss":7.5,"severity":"High","kev":{"listed":false},"epss":{"probability":0.00347,"percentile":0.27071,"score_date":"2026-10-23"},"published_at":"2026-10-01T21:29:55.877Z","modified_at":"2026-10-02T18:22:47.877Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-86344","fetched_at":"2026-10-23T18:52:38.922436Z","source_modified_at":"2026-10-02T18:22:47.877Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-86344","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://access.redhat.com/security/cve/CVE-2026-86344","tags":["vdb-entry","x_refsource_REDHAT"]},{"source":"CVE List","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2529329","tags":["issue-tracking","x_refsource_REDHAT"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"none","automatable":"yes","technical_impact":"partial","assessed_at":"2026-10-02T18:22:37.897462Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-02T18:22:47.877Z","content_hash":"f1fd8412e4bf93deadf843d15eb9e23c001dd39f6dd31902688c1614e0ef321a"}}