Quick answers
- Is CVE-2026-104035 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-104035 being exploited in the wild.
- How severe is CVE-2026-104035?
- Medium severity, with a CVSS score of 5.5, published 6 October 2026.
- Which products and versions are affected?
- SSSD Project SSSD.
- Is there a fix for CVE-2026-104035?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-104035 attacked?
- It is attacked with local access, in a hosted service.
- Am I affected by CVE-2026-104035?
- Check whether you run SSSD Project SSSD. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
The Kerberos Credential Manager (KCM) responder in SSSD fails to release cached credential objects from memory when credentials are destroyed, leading to unbounded memory accumulation (CWE-772). A local, authenticated user with access to the KCM UNIX socket can exploit this by maintaining a persistent connection and cycling credential operations. The attack exhausts available memory, rendering the KCM responder unavailable.
Affected products
- SSSD Project SSSD
Timeline
- 2026-10-06: disclosed