CVE-2025-66270: Kde Connect Protocol

Medium severity, CVSS 4.7. EPSS: 0.2% chance of exploitation in the next 30 days.

The KDE Connect protocol 8 before 2025-11-28 does not correlate device IDs across two packets. This affects KDE Connect before 25.12 on desktop, KDE Connect before 0.5.4 on iOS, KDE Connect before 1.34.4 on Android, GSConnect before 68, and Valent before 1.0.0.alpha.49.

Affected products

• Kde Kde Connect Protocol: version 8 only

Published 2025-12-05. Last modified 2026-06-17.