{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-15722","assignerOrgId":"53f830b8-0a3f-465b-8143-3b8a9948e749","state":"PUBLISHED","assignerShortName":"redhat","dateReserved":"2026-07-14T12:55:19.649Z","datePublished":"2026-07-31T09:18:50.308Z","dateUpdated":"2026-08-18T14:14:22.189Z"},"containers":{"cna":{"title":"389-ds-base: 389-ds-base: pre-authentication stack buffer overflow in get_ruvelement_from_berval() via unbounded replica id parsing","metrics":[{"other":{"content":{"value":"Important","namespace":"https://access.redhat.com/security/updates/classification/"},"type":"Red Hat severity rating"}},{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"format":"CVSS"}],"descriptions":[{"lang":"en","value":"A stack buffer overflow flaw was found in 389 Directory Server (389-ds-base). The get_ruvelement_from_berval() function in repl5_ruv.c copies digit characters from a network-supplied RUV berval into a fixed 16-byte stack buffer without bounds checking. A remote unauthenticated attacker can crash the LDAP server by sending a crafted StartNSDS50ReplicationRequest extended operation containing a replica ID field with more than 16 digit characters. The overflow occurs during payload decoding, before any authorization check. Stack protectors limit impact to denial of service."}],"affected":[{"vendor":"Red Hat","product":"Red Hat Directory Server 11.7 E4S for RHEL 8","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"redhat-ds:11","defaultStatus":"affected","versions":[{"version":"8080020260806114250.f969626e","lessThan":"*","versionType":"rpm","status":"unaffected"}],"cpes":["cpe:/a:redhat:directory_server_e4s:11.7::el8"]},{"vendor":"Red Hat","product":"Red Hat Directory Server 11.9 for RHEL 8","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"redhat-ds:11","defaultStatus":"affected","versions":[{"version":"8100020260803140625.37ed7c03","lessThan":"*","versionType":"rpm","status":"unaffected"}],"cpes":["cpe:/a:redhat:directory_server:11.9::el8"]},{"vendor":"Red Hat","product":"Red Hat Directory Server 12.2 E4S for RHEL 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Directory Server 13","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"389-ds-base","defaultStatus":"unaffected","cpes":["cpe:/a:redhat:directory_server:13"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 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Buffer Overflow","lang":"en","type":"CWE"}]}],"x_redhatCweChain":"CWE-121: Stack-based Buffer Overflow","workarounds":[{"lang":"en","value":"Disable anonymous access by setting nsslapd-allow-anonymous-access to 'off' or 'rootdse' in cn=config. Alternatively, restrict network access to the LDAP port to trusted replication partners only using firewall rules."}],"timeline":[{"lang":"en","time":"2026-04-01T00:00:00.000Z","value":"Reported to Red Hat."},{"lang":"en","time":"2026-07-31T09:00:00.000Z","value":"Made public."}],"credits":[{"lang":"en","value":"Red Hat would like to thank Sebastián Alba Vives for reporting this issue."}],"providerMetadata":{"orgId":"53f830b8-0a3f-465b-8143-3b8a9948e749","shortName":"redhat","dateUpdated":"2026-08-18T14:14:22.189Z"},"x_generator":{"engine":"cvelib 1.8.0"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-31T10:41:52.360035Z","id":"CVE-2026-15722","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"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":"2026-07-31T10:44:58.315Z"}}]}}