CVE-2023-32251 — Kernel: ksmbd brute force delay bypass via asynchronous requests
A vulnerability has been identified in the Linux kernel's ksmbd component (kernel SMB/CIFS server). A security control designed to prevent dictionary attacks, which introduces a…
Published: 2025-07-31 · CVSS: 3.7 · CVSS 3.1
A vulnerability has been identified in the Linux kernel's ksmbd component (kernel SMB/CIFS server). A security control designed to prevent dictionary attacks, which introduces a 5-second delay during session setup, can be bypassed through the use of asynchronous requests. This bypass negates the intended anti-brute-force protection, potentially allowing attackers to conduct dictionary attacks more efficiently against user credentials or other authentication mechanisms.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7