CVE-2025-66270 — Authentication Bypass by Spoofing in Connect Protocol

CWE-290 — Authentication Bypass by Spoofing6 documents6 sources
Severity
4.7MEDIUMNVD
EPSS
0.0%
top 90.64%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
KDE KdeconnectKDE Connect Protocol
Timeline
PublishedDec 5

Description

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.

CVSS vector

CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:NExploitability: 1.6 | Impact: 2.7

Affected Packages2 packages

▶Debiankde/kdeconnect< 25.04.2-1+deb13u1+1

🔴Vulnerability Details

3
OSV
CVE-2025-66270: The KDE Connect protocol 8 before 2025-11-28 does not correlate device IDs across two packets↗2025-12-05
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GHSA
GHSA-xcg9-fw4f-9chv: The KDE Connect protocol 8 before 2025-11-28 does not correlate device IDs across two packets↗2025-12-05
▶
CVEList
CVE-2025-66270: The KDE Connect protocol 8 before 2025-11-28 does not correlate device IDs across two packets↗2025-12-05
▶

📋Vendor Advisories

2
Ubuntu
KDE Connect vulnerability↗2025-12-03
▶
Debian
CVE-2025-66270: gnome-shell-extension-gsconnect - The KDE Connect protocol 8 before 2025-11-28 does not correlate device IDs acros...↗2025
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CVE-2025-66270 — Authentication Bypass by Spoofing | cvebase