CVE-2025-66549

LOW EPSS 15.2%
Published Dec 5, 20256mo ago · Modified Jun 17, 20261w ago
2.7 CVSS 3.1
Low
Find Similar
Published Dec 5, 2025 6mo ago
Last Modified Jun 17, 2026 1w ago

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.

CVSS Details

Base Score
2.7
Exploitability
1.2
Impact
1.4
Vector string
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required High
User Interaction None
Scope Unchanged
Confidentiality Low
Integrity None
Availability None

Threat Intelligence

EPSS Exploit Probability
15.2% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-209

Affected Products 1

VendorProductVersionRange
nextclouddesktop*≥3.0.0  –  <3.16.5

References 4

  • github.com https://github.com/nextcloud/desktop/commit/36d6c234d42b06a6f2e9de3e413a5c3c625edad6
    Patch
  • github.com https://github.com/nextcloud/desktop/pull/8330
    Issue Tracking
  • github.com https://github.com/nextcloud/security-advisories/security/advisories/GHSA-h9xj-qh76-q3hw
    PatchVendor Advisory
  • hackerone.com https://hackerone.com/reports/3159877
    Permissions RequiredVendor Advisory

Remediation

  • github.com https://github.com/nextcloud/desktop/commit/36d6c234d42b06a6f2e9de3e413a5c3c625edad6
    Patch
  • github.com https://github.com/nextcloud/security-advisories/security/advisories/GHSA-h9xj-qh76-q3hw
    PatchVendor Advisory