{"id":"CVE-2026-15722","title":"A stack buffer overflow flaw was found in 389 Directory Server (389-ds-base)","summary":"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 b…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-121"],"vendor":"redhat","product":"directory_server","affected":["directory_server = 11.0","directory_server = 12.0","389_directory_server","enterprise_linux = 7.0","enterprise_linux = 8.0","enterprise_linux = 9.0","enterprise_linux = 10.0"],"published":"2026-07-31","updated":"2026-08-07","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-15722","references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-15722","label":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2499961","label":"secalert@redhat.com"}],"tags":["nvd"],"epss":0.0083,"epssPercentile":0.55554,"ingestedAt":"2026-08-08T15:23:02.452Z","slug":"CVE-2026-15722","body":"## Overview\n\nA 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.\n\n## Affected\n\n- `directory_server = 11.0`\n- `directory_server = 12.0`\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":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0.2,"exploitation":0,"ransomware":0},"changes":[]}