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    CVE-2026-90995

    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.

    Published:Sep 14, 2026
    Last Modified:Oct 14, 2026
    EPS:Sep 14, 2026
    EPSS Score:0.00155
    CVSS Score:5.5

    Affected Products

    Vendor
    Fedoraproject
    Product
    Sssd
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Openshift
    Vendor
    Redhat
    Product
    Openshift Container Platform

    Exploits

    https://bugzilla.redhat.com/show_bug.cgi?id=2479464

    Common Weakness Enumeration

    CWE-476 NULL Pointer Dereference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

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    CVE-2026-104046 (CVSS 6.2) — A flaw was found in SSSD (System Security Services Daemon). When Identity Provider (IdP) authentication is ena…
    CVE-2026-104047 (CVSS 5.3) — A flaw was found in SSSD. When configured to use Microsoft Entra ID, search inputs are not properly sanitized …
    CVE-2026-104048 (CVSS 6.8) — A flaw was found in SSSD. In trust-enabled identity management environments, SSSD evaluates Host-Based Access …
    CVE-2026-104040 (CVSS 4.4) — A flaw was found in SSSD. When configured with the Entra ID identity provider, input lookup names containing s…
    CVE-2026-104032 (CVSS 5.5) — A flaw was found in SSSD. An unprivileged local user can repeatedly request master automount map updates throu…
    CVE-2026-104031 (CVSS 5.5) — A flaw was found in SSSD. In configurations where the autofs responder service is enabled, memory allocated du…
    CVE-2026-104030 (CVSS 5.5) — A flaw was found in sssd. This vulnerability allows a local user to cause a Denial of Service (DoS) by submitt…
    CVE-2026-104029 (CVSS 3.3) — A flaw was found in SSSD. A local attacker can exploit this vulnerability by sending a specially crafted reque…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High