CVE-2026-90996CWE-191

CVE-2026-90996

Medium · published September 14, 2026

CVSS v3.1
4.0
EPSS
0%
Percentile
2.2
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
4.0 · MEDIUM
Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CVSS v4.0
Not supplied
EPSS
0.00128 · 2.2th percentile
Weakness
CWE-191 · Integer Underflow (Wrap or Wraparound)
Published
2026-09-14T20:17Z
Affected products (6)
ProductVersionsFixed in
fedoraproject/sssdall versions—
redhat/openshift_container_platformall versions—
redhat/enterprise_linuxall versions—
redhat/enterprise_linuxall versions—
redhat/enterprise_linuxall versions—
redhat/enterprise_linuxall versions—
References (2)
https://access.redhat.com/security/cve/CVE-2026-90996 · [email protected]https://bugzilla.redhat.com/show_bug.cgi?id=2478986 · [email protected]
EPSS history
Timeline
  • 17 SEP 03:33Z
    EPSS moved — → 0%
    epss
  • 14 SEP 15:55Z
    Sssd: sssd: denial of service in nss responder via crafted zero-length requests
    cvelistv5