Quick answers
- Is CVE-2026-88252 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-88252 being exploited in the wild.
- How severe is CVE-2026-88252?
- Medium severity, with a CVSS score of 4.7, published 6 October 2026.
- Which products and versions are affected?
- sssd project sssd.
- Is there a fix for CVE-2026-88252?
- 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-2026-88252 attacked?
- It is attacked with local access, in a hosted service.
- Am I affected by CVE-2026-88252?
- 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
A flaw in sssd's responder service allows a local attacker to trigger an infinite retry loop (CWE-835) by maintaining many concurrent connections to responder UNIX domain sockets while queuing new connection attempts. This exhausts available file descriptors, causing high CPU utilization and stalling the service. Exploitation requires local access and high attack complexity, but results in denial of service to identity and authentication requests.
Affected products
- sssd project sssd
Timeline
- 2026-10-06: disclosed