{"id":"CVE-2026-104036","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-104036","generatedAt":"2026-10-28T05:27:55.315Z","title":"A local attacker can trigger this vulnerability by requesting identity lookups that resolve to oversized cached entries, resulting in an out-of-bounds write.","description":"A flaw was found in SSSD's NFS idmap plugin. When retrieving cached user or group names, the plugin detects if an entry exceeds the destination buffer size but fails to abort before copying data. A local attacker can trigger this vulnerability by requesting identity lookups that resolve to oversized cached entries, resulting in an out-of-bounds write. This flaw primarily leads to a Denial of Service (DoS) by crashing the identity mapping service, and may also corrupt adjacent process memory.","published":"2026-10-06T01:16:35.000Z","lastModified":"2026-10-06T15:09:20.000Z","status":"Awaiting Analysis","sourceIdentifier":"secalert@redhat.com","cvss":{"version":"3.1","score":5.8,"severity":"MEDIUM","vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:H"},"cwe":["CWE-787"],"affected":[],"epss":{"score":0.00089,"percentile":0.00378,"date":"2026-10-27","history":[{"date":"2026-10-06","score":0.00089,"percentile":0.00375}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.09%). Track it; it rarely justifies an emergency change on its own."},"changes":[{"kind":"new","label":"New CVE","at":"2026-10-06T01:16:35.000Z","detail":{"score":"5.8","severity":"MEDIUM","publishedAt":"2026-10-06T01:16:34.567Z"},"summary":"New CVE, medium severity (CVSS 5.8)."}],"references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-104036","source":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2479057","source":"secalert@redhat.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-104036","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}