CVE-2015-5370: Canonical Ubuntu Linux

Medium severity, CVSS 5.9. EPSS: 19.1% chance of exploitation in the next 30 days.

Samba 3.x and 4.x before 4.2.11, 4.3.x before 4.3.8, and 4.4.x before 4.4.2 does not properly implement the DCE-RPC layer, which allows remote attackers to perform protocol-downgrade attacks, cause a denial of service (application crash or CPU consumption), or possibly execute arbitrary code on a client system via unspecified vectors.

Affected products

• Canonical Ubuntu Linux: version 14.04 only; version 15.10 only; version 16.04 only
• Samba Samba: version 3.6.0 only; version 3.6.1 only; version 3.6.2 only; version 3.6.3 only; version 3.6.4 only; version 3.6.5 only; …

Published 2016-04-25. Last modified 2026-06-17.