CVE-2017-9604: Kde Kmail

High severity, CVSS 7.5. EPSS: 1.3% chance of exploitation in the next 30 days.

KDE kmail before 5.5.2 and messagelib before 5.5.2, as distributed in KDE Applications before 17.04.2, do not ensure that a plugin's sign/encrypt action occurs during use of the Send Later feature, which allows remote attackers to obtain sensitive information by sniffing the network.

Affected products

• Kde Kmail: up to and including 5.5.1
• Kde Messagelib: up to and including 5.5.1

Published 2017-06-13. Last modified 2026-06-17.