CVE-2021-20251

samba: Race condition in the bad password lockout code

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Severity

Low

Red Hat Product Security

5.9

CVSS 3.1

Review impact separately from score.

Published · February 5, 2021

Updated · November 21, 2025

Description

A flaw was found in samba. A race condition in the password lockout code may lead to the risk of brute force attacks being successful if special conditions are met.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 5.9
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

CWE-362 · Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')