CVE-2018-14345: Sddm Project Sddm

High severity, CVSS 7.5. EPSS: 1.2% chance of exploitation in the next 30 days.

An issue was discovered in SDDM through 0.17.0. If configured with ReuseSession=true, the password is not checked for users with an already existing session. Any user with access to the system D-Bus can therefore unlock any graphical session. This is related to daemon/Display.cpp and helper/backend/PamBackend.cpp.

Affected products

• Sddm Project Sddm: up to and including 0.17.0

Published 2018-07-17. Last modified 2026-06-17.