Auth bypass in Nextcloud Desktop
CVE-2025-47792
Nextcloud Desktop is the desktop sync client for Nextcloud. In versions of Nextcloud Desktop prior to 3.15, 3rdparty applications already installed on a user machine can create link shares for almost all data via the socket API. These shares can then be easily sent off to an external service. Nextcloud Desktop fixes the issue in version 3.15. No known workarounds are available.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.0 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:L/A:N.
EPSS exploit prediction
EPSS: 0.002 (6.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 6th percentile — 6.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
- Nextcloud Desktop
- Nextcloud Security-Advisories — versions < 3.15
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/nextcloud/security-advisories/security/advisories/GHSA-qm2f-959g-7p65 (Third Party Advisory)
- github.com/nextcloud/desktop/pull/7517 (Patch)
- hackerone.com/reports/1995856 (Permissions Required)
Frequently asked questions
- What is CVE-2025-47792?
- CVE-2025-47792 is a medium-severity vulnerability in Nextcloud Desktop, classified under Improper Access Control. CVSS score: 5.0/10. Published 2025-05-16.
- How severe is CVE-2025-47792?
- Medium severity. CVSS v3 base score is 5.0 out of 10.
- Is CVE-2025-47792 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.