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Vulnerability record/PUBLISHED/Published Jul 31, 2025 20:44:02 UTC

CVE-2023-32251

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.

Base score3.7/ 10
SeverityLowCVSS 3.1

Exploitability / impact

CVSS metric breakdown

Vector-derived attributes
Base severityLow
Attack vectorNetworkAV
Attack complexityHighAC
Privileges requiredNonePR
User interactionNoneUI
ScopeUnchangedS
Confidentiality impactLowC
Integrity impactNoneI
Availability impactNoneA
CVSS vector stringCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

CVSS communicates standardized severity and impact characteristics. It does not establish whether a system is exploitable in your specific environment.

Record context

CVE Numbering Authorityredhat
Last updatedNov 9, 2026 03:07:42 UTC
PublishedJul 31, 2025 20:44:02 UTC
ReservedMay 5, 2023 10:00:07 UTC