CVE-2026-90995

MediumCVSS 5.5/10Last modified Nov 6, 2026

Description

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.

Metrics

CVSS 3.1 5.5/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-476

Affected software

Vendor	Product	Versions
Red Hat	Red Hat Enterprise Linux 10	—
Red Hat	Red Hat Enterprise Linux 6	—
Red Hat	Red Hat Enterprise Linux 7	—
Red Hat	Red Hat Enterprise Linux 8	—
Red Hat	Red Hat Enterprise Linux 9	—
Red Hat	Red Hat OpenShift Container Platform 4	—
Red Hat	Red Hat OpenShift Container Platform 4	—

References

https://access.redhat.com/security/cve/CVE-2026-90995Mitigation, Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2479464Exploit, Issue Tracking, Mitigation, Vendor Advisory

Timeline

Published: Sep 14, 2026
Last modified: Nov 6, 2026
NVD status: Analyzed

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