CVE-2026-88252
mediumA flaw was found in sssd.
Vendor / product: Fedoraproject — sssd
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.
CVSS
5.5
5.5 (CVSS v3.1)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Severity source: NVD CVSS v3.1 (nvd@nist.gov)
Timeline (UTC)
Published: 2026-10-06 18:16
Modified: 2026-10-20 19:39
NVD status: Analyzed
Last synced 3 days ago
Verified against the source API 2026-10-27 06:57 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
fedoraproject / sssd 2.12.0
redhat / openshift_container_platform 4.0
redhat / enterprise_linux 7.0, 8.0, 9.0, 10.0
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
Vendor advisory: https://access.redhat.com/security/cve/CVE-2026-88252
Vendor advisory: https://bugzilla.redhat.com/show_bug.cgi?id=2479240
Vendor advisory: https://bugzilla.redhat.com/show_bug.cgi?id=2479240
Patch / mitigation: https://bugzilla.redhat.com/show_bug.cgi?id=2479240
Patch / mitigation: https://bugzilla.redhat.com/show_bug.cgi?id=2479240
References
- https://access.redhat.com/security/cve/CVE-2026-88252 secalert@redhat.com
- https://bugzilla.redhat.com/show_bug.cgi?id=2479240 secalert@redhat.com
- https://bugzilla.redhat.com/show_bug.cgi?id=2479240 134c704f-9b21-4f2e-91b3-4a467353bcc0
Data sources
NVD CVE API 2.0 — fetched 2026-10-27 06:57 UTC · record ↗