Authentication Bypass Affecting kdeconnect package, versions <25.04.2-1+deb13u1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-DEBIAN13-KDECONNECT-14124276
- published27 Nov 2025
- disclosed5 Dec 2025
Introduced: 27 Nov 2025
CVE-2025-66270 (opens in a new tab)How to fix?
Upgrade Debian:13 kdeconnect to version 25.04.2-1+deb13u1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kdeconnect package and not the kdeconnect package as distributed by Debian.
See How to fix? for Debian:13 relevant fixed versions and status.
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.
References
- https://security-tracker.debian.org/tracker/CVE-2025-66270
- https://github.com/GSConnect/gnome-shell-extension-gsconnect/commit/a38246deec0af50ae218cdc51db32cdd7eb145e3
- https://github.com/andyholmes/valent/commit/85f773124a67ed1add79e7465bb088ec667cccce
- https://invent.kde.org/network/kdeconnect-android/-/commit/675d2d24a1eb95d15d9e5bde2b7e2271d5ada6a9
- https://invent.kde.org/network/kdeconnect-ios/-/commit/6c003c22d04270cabc4b262d399c753d55cf9080
- https://invent.kde.org/network/kdeconnect-kde/-/commit/4e53bcdd5d4c28bd9fefd114b807ce35d7b3373e
- https://kde.org/info/security/advisory-20251128-1.txt