{"schemaVersion":3,"id":"CVE-2026-88252","aliases":["UBUNTU-CVE-2026-88252","DEBIAN-CVE-2026-88252"],"status":"published","duplicateOf":null,"title":null,"description":"A flaw was found in sssd. A local user can cause a Denial of Service (DoS) by exhausting the responder service's available file descriptors (system handles used for open connections). By opening and maintaining many concurrent connections to a responder socket while continuing to queue new connection attempts, an attacker can trigger an unthrottled retry loop. This condition leads to high CPU utilization and stalls the service, preventing legitimate identity and authentication requests from being processed.","dates":{"published":"2026-10-06T17:50:41.501Z","modified":"2026-10-06T18:21:02.040Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":5.5,"severity":"medium","version":"3.1","versionLabel":"v3.1","source":"NVD","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":4.7,"severity":"medium","vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Ubuntu","score":5.5,"severity":"medium","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","exploitability":4.6,"impact":6,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Debian","score":4.7,"severity":"medium","vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H","exploitability":2.6,"impact":6,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":5.5,"severity":"medium","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00131,"percentile":0.0244,"severity":"low","asOf":"2026-10-22T00:00:00.000Z","change":{"pp":null,"baselineDate":null,"baselineScore":null},"history":[{"date":"2026-10-07T00:00:00.000Z","score":0.00143,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00143,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00143,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00143,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00143,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00143,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00143,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00143,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00143,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00143,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00143,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00143,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00143,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00143,"percentile":null},{"date":"2026-10-21T00:00:00.000Z","score":0.00131,"percentile":null},{"date":"2026-10-22T00:00:00.000Z","score":0.00131,"percentile":0.0244}],"last30":[{"date":"2026-10-07T00:00:00.000Z","score":0.00143,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00143,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00143,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00143,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00143,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00143,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00143,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00143,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00143,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00143,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00143,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00143,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00143,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00143,"percentile":null},{"date":"2026-10-21T00:00:00.000Z","score":0.00131,"percentile":null},{"date":"2026-10-22T00:00:00.000Z","score":0.00131,"percentile":0.0244}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[{"id":"REF_42A9B5C6481C4BE7","name":"Exploit Reference (bugzilla.redhat.com)","source":"reference","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2479240","maturity":"unknown","reliabilityScore":0.2,"verified":false,"type":null,"platforms":[],"requiresAuth":null,"exploitdb":null,"metasploit":null}],"exploitCount":1,"weaknesses":[{"id":"CWE-835","name":"Loop with Unreachable Exit Condition ('Infinite Loop')","description":"The product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop.","type":"weakness","status":"Incomplete","abstraction":"Base","likelihoodOfExploit":null,"url":"https://cwe.mitre.org/data/definitions/835.html"}],"affected":[{"vendor":"debian","product":"sssd","name":"sssd","label":"sssd","ecosystem":"Debian","cpePart":null,"purl":"pkg:deb/debian/sssd","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"sssd","name":"sssd","label":"sssd","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/sssd","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"fedoraproject","product":"sssd","name":"sssd","label":"sssd","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"2.12.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"2.12.0","eol":null,"hubHref":"/vendor/fedoraproject/sssd"},{"vendor":"redhat","product":"enterprise_linux","name":"enterprise linux","label":"enterprise_linux","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"7.0","noFixRecorded":false,"fixedIn":null},{"text":"8.0","noFixRecorded":false,"fixedIn":null},{"text":"9.0","noFixRecorded":false,"fixedIn":null},{"text":"10.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"7.0 | 8.0 | 9.0 | 10.0","eol":{"isEol":true,"eolDate":"2024-06-30T00:00:00.000Z","matchMethod":"cpe","cycle":{"name":"7","label":"7 (ELS)","eolFrom":"2024-06-30T00:00:00.000Z","isLts":true,"isMaintained":true,"latestVersion":"7.9"},"product":{"name":"rhel","label":"Red Hat Enterprise Linux","category":"os"}},"hubHref":"/vendor/redhat/enterprise_linux"},{"vendor":"redhat","product":"openshift_container_platform","name":"openshift container platform","label":"openshift_container_platform","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"4.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"4.0","eol":null,"hubHref":"/vendor/redhat/openshift_container_platform"}],"affectedCount":5,"eol":{"hasEol":true,"count":1},"references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-88252","label":"access.redhat.com/security/cve/CVE-2026-88252","hostname":"access.redhat.com","tags":["VDB Entry","X Refsource REDHAT","Vendor Advisory"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2479240","label":"bugzilla.redhat.com/show_bug.cgi?id=2479240","hostname":"bugzilla.redhat.com","tags":["Issue Tracking","X Refsource REDHAT","REPORT","Exploit","Mitigation","Vendor Advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-88252","label":"ubuntu.com/security/CVE-2026-88252","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-88252","label":"www.cve.org/CVERecord?id=CVE-2026-88252","hostname":"www.cve.org","tags":["REPORT"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-88252","label":"security-tracker.debian.org/tracker/CVE-2026-88252","hostname":"security-tracker.debian.org","tags":["Advisory"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2026-10-06T17:50:41.501Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-10-06T18:21:02.040Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":32,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-22T16:22:41.190Z","stale":false,"partial":false}}