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.

EPSS: 0.002 (4.8th percentile) — read the EPSS interpretation.

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.

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

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.