Insufficient verification of data authenticity in KDE Connect and KDE Connect iOS - CVE-2025-66270
Published: November 27, 2025 / Updated: November 28, 2025
Vulnerability identifier: #VU118798
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2025-66270
CWE-ID: CWE-345
Exploitation vector: Adjecent network
Exploit availability:
No public exploit available
Vendor: KDE.org
Affected software:
KDE Connect
KDE Connect iOS
KDE Connect
KDE Connect iOS
Detailed vulnerability description
The vulnerability allows a remote attacker to perform a MitM attack.
The vulnerability exists due to the application allows device identifiers to be changed during handshake in core/backends/lan/lanlinkprovider.cpp. A remote attacker can perform MitM attack and gain unauthorized access to the system.
How to mitigate CVE-2025-66270
Install updates from vendor's website.