Description
A flaw was found in SSSD. When configured to enforce account expiration using LDAP (Lightweight Directory Access Protocol) shadow attributes, SSSD fails to treat an expiration value of zero as an expired account. A user with valid credentials for an expired account can exploit this flaw to bypass access controls and authenticate to the system. This allows unauthorized access to persist after the account was intended to be deactivated.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| 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 5 | — | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | sssd | No fix yet | — |
| Debian 13 | sssd | No fix yet | — |
| Debian 12 | sssd | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | sssd | No fix yet | — |
| Ubuntu 26.04 LTS | sssd | No fix yet | — |
| Ubuntu 24.04 LTS | sssd | No fix yet | — |
| Ubuntu 22.04 LTS | sssd | No fix yet | — |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 20.04 LTS | sssd | No fix yet | — |
| Ubuntu Pro 18.04 LTS | sssd | No fix yet | — |
| Ubuntu Pro 16.04 LTS | sssd | No fix yet | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP6 | sssd | 2.10.2-150600.3.58.1 | SUSE-SU-2026:5079-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 15 SP6 | sssd | 2.10.2-150600.3.58.1 | SUSE-SU-2026:5079-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | sssd +32 | 2.9.4-1.amzn2023.0.5 | ALAS2023-2026-3416 |
Advisories 2
- ALAS2023-2026-3416 Moderate: sssd security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Nov 9, 2026
- SUSE-SU-2026:5079-1 Security update for sssd SUSE / openSUSE Security Updates · Nov 3, 2026
References
- https://access.redhat.com/security/cve/CVE-2026-104033 vdb-entry
- RHBZ#2479271 issue-tracking