What is CVE-2026-90996?

CVE-2026-90996 is a medium-severity vulnerability in Red Hat Enterprise Linux 10, classified under Integer Underflow. CVSS score: 4.0/10. Published 2026-09-14.

How severe is CVE-2026-90996?

Medium severity. CVSS v3 base score is 4.0 out of 10.

Integer overflow in Red Hat Enterprise Linux 10

CVE-2026-90996

A flaw was found in sssd. A local unprivileged user could send a specially crafted request with a zero-length body to the Network Security Services (NSS) responder. This could lead to a denial-of-service condition, causing the NSS responder to become unstable or terminate. This vulnerability affects the availability of the system responder.

CVSS v3 metric

CVSS v3 base score 4.0 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.

Affected products

Weakness classification (CWE)

CWE-191 — Integer Underflow

References

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

Frequently asked questions

What is CVE-2026-90996?: CVE-2026-90996 is a medium-severity vulnerability in Red Hat Enterprise Linux 10, classified under Integer Underflow. CVSS score: 4.0/10. Published 2026-09-14.
How severe is CVE-2026-90996?: Medium severity. CVSS v3 base score is 4.0 out of 10.