# CVE-2026-104037: SSSD integer underflow in autofs responder

Source: https://junglewise.ai/threats/cve-2026-104037-a-flaw-was-found-in-sssd-a-local-attacker-can-exploit-this-issue  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-06. Updated: 2026-10-06  
License: CC BY 4.0 with a link back

CVE-2026-104037 · Severity: medium · CVSS 5.5 · Published 2026-10-06

SSSD is a system service that manages authentication and authorization for Linux systems. A local attacker can send a malformed request to the autofs responder component, causing an integer underflow that crashes the responder process and results in a denial of service. Only systems with autofs responder enabled in SSSD are affected.

Technologies: [Red Hat SSSD](https://junglewise.ai/threats/technologies/red-hat-sssd). Vendors: [Red Hat](https://junglewise.ai/threats/vendors/red-hat).

## Quick answers

**Is CVE-2026-104037 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-104037 being exploited in the wild.

**How severe is CVE-2026-104037?** Medium severity, with a CVSS score of 5.5, published 6 October 2026.

**Which products and versions are affected?** Red Hat SSSD.

**Is there a fix for CVE-2026-104037?** 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-2026-104037 attacked?** It is attacked with local access.

**Am I affected by CVE-2026-104037?** Check whether you run Red Hat 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

An integer underflow in the autofs responder UNIX socket handler occurs when processing a specially crafted request with an invalid packet length field. This causes an out-of-bounds memory read that crashes the responder process. The vulnerability requires local access and low privileges, resulting in denial of service to the autofs responder only.

## Affected products

- Red Hat SSSD

## Timeline

- 2026-10-06: disclosed

## References

- [https://access.redhat.com/downloads/content/package-browser/](https://access.redhat.com/downloads/content/package-browser/)
- [https://access.redhat.com/security/cve/CVE-2026-104037](https://access.redhat.com/security/cve/CVE-2026-104037)

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