CVE-2021-20251: Fedoraproject Fedora

Medium severity, CVSS 5.9. EPSS: 0.8% chance of exploitation in the next 30 days.

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.

Affected products

• Fedoraproject Fedora: version 37 only
• Samba Samba: from 4.1.0, before 4.16.8 (fixed in 4.16.8); from 4.17.0, before 4.17.4 (fixed in 4.17.4)

Published 2023-03-06. Last modified 2026-06-17.