What is CVE-2026-90995?

CVE-2026-90995 is a medium-severity vulnerability in Red Hat Enterprise Linux 10, classified under NULL Pointer Dereference. CVSS score: 5.5/10. Published 2026-09-14.

How severe is CVE-2026-90995?

Medium severity. CVSS v3 base score is 5.5 out of 10.

NULL pointer dereference in Red Hat Enterprise Linux 10

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.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Affected products

Weakness classification (CWE)

CWE-476 — NULL Pointer Dereference

References

secalert@redhat.com (x_refsource_REDHAT, vdb-entry)
secalert@redhat.com (x_refsource_REDHAT, issue-tracking)

Frequently asked questions

What is CVE-2026-90995?: CVE-2026-90995 is a medium-severity vulnerability in Red Hat Enterprise Linux 10, classified under NULL Pointer Dereference. CVSS score: 5.5/10. Published 2026-09-14.
How severe is CVE-2026-90995?: Medium severity. CVSS v3 base score is 5.5 out of 10.