Low 2.7Published Dec 5, 2025

CVE-2025-66549Nextcloud Desktop is the desktop sync client for Nextcloud.

Updated under an hour ago (2026-10-19 09:40 UTC)

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It affects nextcloud desktop. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for nextcloud desktop

Exploited in the last 30 days

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: 2.7 LOW (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N
Weakness (CWE): CWE-209
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Not given
NVD analysis: Analyzed
Record last updated: Oct 15, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

nextcloud desktop nextcloud:desktop	from 3.0.0 before 3.16.5	NVD

References

https://github.com/nextcloud/desktop/commit/36d6c234d42b06a6f2e9de3e413a5c3c625edad6patch
https://github.com/nextcloud/desktop/pull/8330issue-tracking
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-h9xj-qh76-q3hwpatch, vendor-advisory
https://hackerone.com/reports/3159877permissions-required, vendor-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.