Is CVE-2026-104042 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-104042?

CVE-2026-104042 has a CVSS v3 severity of MEDIUM (5.5).

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CVE-2026-104042

Description

A flaw was found in sssd. A local attacker can cause a Denial of Service (DoS) by sending a crafted Pluggable Authentication Module (PAM) request containing a zero-length authentication token to the responder socket. Due to missing input validation, the service attempts to read beyond buffer boundaries when processing the token, causing the PAM responder to crash.