Low severity2.4NVD Advisory· Published Dec 5, 2025· Updated Jun 17, 2026

CVE-2025-66549

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Nextcloud/desktop2 versions
cpe:2.3:a:nextcloud:desktop:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:nextcloud:desktop:*:*:*:*:*:*:*:*range: >=3.0.0,<3.16.5
- (no CPE)range: <3.16.5
Nextcloud/Nextcloud Desktop Clientllm-fuzzy
Range: <3.16.5
Nextcloud/security-advisoriescpe-rescue
Range: < 3.16.5

Patches

Vulnerability mechanics

References

github.com/nextcloud/desktop/commit/36d6c234d42b06a6f2e9de3e413a5c3c625edad6nvdPatch
github.com/nextcloud/security-advisories/security/advisories/GHSA-h9xj-qh76-q3hwnvdPatchVendor Advisory
hackerone.com/reports/3159877nvdPermissions RequiredVendor Advisory
github.com/nextcloud/desktop/pull/8330nvdIssue Tracking

News mentions

No linked articles in our index yet.

cvss	0.156
epss	0.000
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000