CVE-2020-10745: Debian Linux

High severity, CVSS 7.5. EPSS: 3.9% chance of exploitation in the next 30 days.

A flaw was found in all Samba versions before 4.10.17, before 4.11.11 and before 4.12.4 in the way it processed NetBios over TCP/IP. This flaw allows a remote attacker could to cause the Samba server to consume excessive CPU use, resulting in a denial of service. This highest threat from this vulnerability is to system availability.

Affected products

• Debian Debian Linux: version 9.0 only
• Fedoraproject Fedora: version 31 only
• Opensuse Leap: version 15.1 only; version 15.2 only
• Samba Samba: from 4.0.0, before 4.10.17 (fixed in 4.10.17); from 4.11.0, before 4.11.11 (fixed in 4.11.11); from 4.12.0, before 4.12.4 (fixed in 4.12.4)

Published 2020-07-07. Last modified 2026-06-17.