CVE-2026-90995
mediumA flaw was found in SSSD (System Security Services Daemon).
Vendor / product: Fedoraproject — sssd
A flaw was found in SSSD (System Security Services Daemon). A local attacker with privileges to connect to the PAM (Pluggable Authentication Modules) responder socket can send a specially crafted protocol request. If the `pam_app_services` configuration is enabled and the service item is omitted from the request, a NULL pointer dereference can occur. This vulnerability leads to a denial of service, causing the PAM responder to crash and disrupt 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: 2026-09-14 16:17
Modified: 2026-10-14 18:05
NVD status: Analyzed
Last synced 2 days ago
Verified against the source API 2026-10-27 06:53 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-2026-90995
Vendor advisory: https://bugzilla.redhat.com/show_bug.cgi?id=2479464
Patch / mitigation: https://access.redhat.com/security/cve/CVE-2026-90995
Patch / mitigation: https://bugzilla.redhat.com/show_bug.cgi?id=2479464
References
- https://access.redhat.com/security/cve/CVE-2026-90995 secalert@redhat.com
- https://bugzilla.redhat.com/show_bug.cgi?id=2479464 secalert@redhat.com
Data sources
NVD CVE API 2.0 — fetched 2026-10-27 06:53 UTC · record ↗