CVE-2025-66549

Nextcloud Desktop discloses information when attempting to lock a file inside a end-to-end encrypted directory

Published Dec 5, 2025 CVSS 3.1 · 2.4 Low EPSS < 1% KEV · Not listed
Description
Nextcloud Desktop is the desktop sync client for Nextcloud. Prior to 3.16.5, when trying to manually lock a file inside an end-to-end encrypted directory, the path of the file was sent to the server unencrypted, making it possible for administrators to see it in log files. This vulnerability is fixed in 3.16.5.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
CPEs cpe:2.3:a:nextcloud:desktop:*:*:*:*:*:*:*:*
Type Values Removed Values Added
First Time appeared Nextcloud
Nextcloud desktop
Vendors & Products Nextcloud
Nextcloud desktop
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description Nextcloud Desktop is the desktop sync client for Nextcloud. Prior to 3.16.5, when trying to manually lock a file inside an end-to-end encrypted directory, the path of the file was sent to the server unencrypted, making it possible for administrators to see it in log files. This vulnerability is fixed in 3.16.5.
Title Nextcloud Desktop discloses information when attempting to lock a file inside a end-to-end encrypted directory
Weaknesses CWE-209
References
Metrics cvssV3_1

{'score': 2.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:N/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
Dec 8, 2025, 7:54 PM
Reserved
Dec 4, 2025, 3:52 PM
Status
Analyzed
Published
Dec 5, 2025, 6:15 PM
Modified
Oct 15, 2026, 9:10 PM