{"id":"CVE-2026-16560","aliases":["AZL-93072","DEBIAN-CVE-2026-16560","EUVD-2026-47661","GHSA-cwj4-7fp9-r4jg","UBUNTU-CVE-2026-16560"],"status":"published","title":"389-ds-base: 389-ds-base: heap-buffer-overflow in rdn_av_swap on quoted multivalued rdn","description":"A heap-buffer-overflow flaw was found in Directory Server (389-ds-base). When a DN contains a legacy-quoted value, the server won't close the heap allocation allowing another call to refer to the same memory pointer causing a denial of service or an arbitrary memory write operation.","severity":{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00396,"percentile":0.34254,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-1220"],"published":"2026-07-22T12:51:43Z","modified":"2026-11-05T05:36:30Z","affected":[{"source":"osv","ecosystem":"Azure Linux:3","package":"389-ds-base","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"3.1.1-12"}]}]},{"source":"osv","ecosystem":"Debian:12","package":"389-ds-base","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.3.1+dfsg1-1","2.3.1+dfsg1-1+deb12u1","2.3.4+dfsg1-1","2.3.4+dfsg1-1.1","2.4.4+dfsg1-1","2.4.4+dfsg1-3","2.4.5+dfsg1-1","3.0.2+dfsg1-1","3.1.1+dfsg1-1","3.1.1+dfsg1-2","3.1.1+dfsg1-3","3.1.2+dfsg1-1","3.1.2+vendor1-1","3.1.2+vendor1-2","3.3.0-1","3.3.0-2","3.3.1-1","3.3.1-3"]},{"source":"osv","ecosystem":"Debian:13","package":"389-ds-base","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.1.2+dfsg1-1","3.1.2+dfsg1-1+deb13u1","3.1.2+vendor1-1","3.1.2+vendor1-2","3.3.0-1","3.3.0-2","3.3.1-1","3.3.1-3"]},{"source":"osv","ecosystem":"Ubuntu:Pro:16.04:LTS","package":"389-ds-base","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.3.3.12-1build1","1.3.3.13-1","1.3.4.5-2","1.3.4.8-1","1.3.4.8-3","1.3.4.8-3ubuntu1","1.3.4.8-4","1.3.4.9-1","1.3.4.9-1ubuntu0.1~esm1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:18.04:LTS","package":"389-ds-base","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.3.7.5-1","1.3.7.5-1build1","1.3.7.5-1build2","1.3.7.9-1","1.3.7.10-1","1.3.7.10-1ubuntu1","1.3.7.10-1ubuntu1+esm1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:20.04:LTS","package":"389-ds-base","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.4.1.6-4","1.4.1.6-4build1","1.4.2.4-1","1.4.2.4-1build1","1.4.3.2-1","1.4.3.2-1build1","1.4.3.6-2","1.4.3.6-2ubuntu0.1~esm1"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"389-ds-base","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.4.4.11-2build1","1.4.4.11-2build2","1.4.4.17-1","2.0.11-2","2.0.14-1","2.0.15-1","2.0.15-1ubuntu2"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"389-ds-base","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.3.4+dfsg1-1","2.4.4+dfsg1-1ubuntu1","2.4.4+dfsg1-1ubuntu4","2.4.4+dfsg1-3","2.4.5+dfsg1-1"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"389-ds-base","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.1.2+vendor1-2","3.1.2+vendor1-2build1","3.3.1-3"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"389-ds-base","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.1.2+dfsg1-1","3.1.2+vendor1-2"]}],"products":[{"vendor":"red hat","product":"red hat directory server 11"},{"vendor":"red hat","product":"red hat directory server 12"},{"vendor":"red hat","product":"red hat directory server 13"},{"vendor":"red hat","product":"red hat enterprise linux 10"},{"vendor":"red hat","product":"red hat enterprise linux 6"},{"vendor":"red hat","product":"red hat enterprise linux 7"},{"vendor":"red hat","product":"red hat enterprise linux 8"},{"vendor":"red hat","product":"red hat enterprise linux 9"}],"references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-16560","tags":["vdb-entry","x_refsource_REDHAT"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2506102","tags":["issue-tracking","x_refsource_REDHAT","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-16560","tags":["web"]},{"url":"https://github.com/advisories/GHSA-cwj4-7fp9-r4jg"},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-16560","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-16560","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-16560","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-16560","title":"389-ds-base: 389-ds-base: heap-buffer-overflow in rdn_av_swap on quoted multivalued rdn","description":"A heap-buffer-overflow flaw was found in Directory Server (389-ds-base). When a DN contains a legacy-quoted value, the server won't close the heap allocation allowing another call to refer to the same memory pointer causing a denial of service or an arbitrary memory write operation.","status":"published","published":"2026-07-22T12:51:43.263Z","modified":"2026-11-05T19:24:06.831Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"cna"}],"cwes":["CWE-1220"],"updated_at":"2026-11-05T20:54:59.423743Z"}],"euvd":[{"id":"EUVD-2026-47661","description":"A heap-buffer-overflow flaw was found in Directory Server (389-ds-base). When a DN contains a legacy-quoted value, the server won't close the heap allocation allowing another call to refer to the same memory pointer causing a denial of service or an arbitrary memory write operation.","status":"published","published":"2026-07-22T12:51:43Z","modified":"2026-11-05T19:24:06Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"updated_at":"2026-11-05T20:01:48.21368Z"}],"ghsa":[{"id":"GHSA-cwj4-7fp9-r4jg","title":"A heap-buffer-overflow flaw was found in Directory Server (389-ds-base). When a DN contains a...","description":"A heap-buffer-overflow flaw was found in Directory Server (389-ds-base). When a DN contains a legacy-quoted value, the server won't close the heap allocation allowing another call to refer to the same memory pointer causing a denial of service or an arbitrary memory write operation.","status":"published","published":"2026-07-22T15:31:24Z","modified":"2026-07-22T15:31:24Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"cwes":["CWE-1220"],"updated_at":"2026-11-02T15:09:38.678188Z"}],"nvd":[{"id":"CVE-2026-16560","description":"A heap-buffer-overflow flaw was found in Directory Server (389-ds-base). When a DN contains a legacy-quoted value, the server won't close the heap allocation allowing another call to refer to the same memory pointer causing a denial of service or an arbitrary memory write operation.","status":"published","published":"2026-07-22T14:17:18.043Z","modified":"2026-11-05T20:17:51.013Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"secondary"}],"cwes":["CWE-1220"],"updated_at":"2026-11-05T21:56:41.836249Z"}],"osv":[{"id":"DEBIAN-CVE-2026-16560","description":"A heap-buffer-overflow flaw was found in Directory Server (389-ds-base). When a DN contains a legacy-quoted value, the server won't close the heap allocation allowing another call to refer to the same memory pointer causing a denial of service or an arbitrary memory write operation.","status":"published","published":"2026-07-22T14:17:18.043Z","modified":"2026-10-01T03:02:26.859755286Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"updated_at":"2026-11-02T15:45:52.562592Z"},{"id":"UBUNTU-CVE-2026-16560","description":"A heap-buffer-overflow flaw was found in Directory Server (389-ds-base). When a DN contains a legacy-quoted value, the server won't close the heap allocation allowing another call to refer to the same memory pointer causing a denial of service or an arbitrary memory write operation.","status":"published","published":"2026-07-22T14:17:00Z","modified":"2026-10-17T12:59:53.218827884Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"updated_at":"2026-11-02T16:56:00.592716Z"},{"id":"AZL-93072","title":"CVE-2026-16560 affecting package 389-ds-base 3.1.1-12","description":"A heap-buffer-overflow flaw was found in Directory Server (389-ds-base). When a DN contains a legacy-quoted value, the server won't close the heap allocation allowing another call to refer to the same memory pointer causing a denial of service or an arbitrary memory write operation.","status":"published","published":"2026-07-22T14:17:18Z","modified":"2026-11-05T05:36:30Z","updated_at":"2026-11-05T16:41:25.880689Z"}]}}