CVE-2026-104030
mediumA flaw was found in sssd.
Vendor / product: Fedoraproject — sssd
A flaw was found in sssd. This vulnerability allows a local user to cause a Denial of Service (DoS) by submitting a specially crafted passkey authentication token that lacks null terminators. The authentication service reads past the end of the provided memory buffer, causing the process to crash and disrupting authentication services.
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 (secalert@redhat.com)
Timeline (UTC)
Published: 2026-10-05 20:17
Modified: 2026-10-28 14:28
NVD status: Analyzed
Last synced 16 hours ago
Verified against the source API 2026-10-28 14:55 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-2026-104030
Vendor advisory: https://bugzilla.redhat.com/show_bug.cgi?id=2479429
References
- https://access.redhat.com/security/cve/CVE-2026-104030 secalert@redhat.com
- https://bugzilla.redhat.com/show_bug.cgi?id=2479429 secalert@redhat.com
Data sources
NVD CVE API 2.0 — fetched 2026-10-28 14:55 UTC · record ↗