Quick answers
- Is CVE-2026-104041 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-104041 being exploited in the wild.
- How severe is CVE-2026-104041?
- Medium severity, with a CVSS score of 5.5, published 6 October 2026.
- Which products and versions are affected?
- SSSD SSSD.
- Is there a fix for CVE-2026-104041?
- 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-2026-104041 attacked?
- It is attacked with local access, in a hosted service.
- Am I affected by CVE-2026-104041?
- Check whether you run 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 vulnerability is an unbounded resource allocation flaw (CWE-770) in the SSSD NSS responder's negative cache implementation. A local attacker with unprivileged access can repeatedly request lookups for nonexistent entries; the negative cache grows without bound because it does not enforce a size limit and only purges expired entries when an existing key is requeried. This leads to memory exhaustion and denial of service as the responder becomes unresponsive or terminates.
Affected products
- SSSD SSSD
Timeline
- 2026-10-06: disclosed