CVE catalog

CVE-2025-66549

nextcloud-desktop: CVE-2025-66549

Severity: Low · CVSS 2.4CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:N/A:N
Published: Dec 4, 2025, 11:00:00 PM UTC
Source: [NVD] · [CVE record]
EPSS: 0.30% · Oct 25, 2026

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.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	nextcloud-desktop	sid	`35.0.0-1`	fixed
Debian	nextcloud-desktop	forky	`35.0.0-1`	fixed
Debian	nextcloud-desktop	trixie	`3.16.7-1~deb13u1`	fixed
Debian	nextcloud-desktop	bookworm	`3.7.3-1+deb12u2`	vulnerable
Cpe	desktop	Not reported	`3.16.5`	fixed
Ubuntu	nextcloud-desktop	20.04	`2.5.3-1`	vulnerable
Ubuntu	nextcloud-desktop	20.04	`2.6.0-1`	vulnerable
Ubuntu	nextcloud-desktop	20.04	`2.6.1-1`	vulnerable
Ubuntu	nextcloud-desktop	20.04	`2.6.1-2`	vulnerable
Ubuntu	nextcloud-desktop	20.04	`2.6.2-1`	vulnerable
Ubuntu	nextcloud-desktop	20.04	`2.6.2-1build1`	vulnerable
Ubuntu	nextcloud-desktop	22.04	`3.2.3-0ubuntu1`	vulnerable
Ubuntu	nextcloud-desktop	22.04	`3.3.5-1`	vulnerable
Ubuntu	nextcloud-desktop	22.04	`3.3.5-1ubuntu1`	vulnerable
Ubuntu	nextcloud-desktop	22.04	`3.4.2-1`	vulnerable
Ubuntu	nextcloud-desktop	22.04	`3.4.2-1ubuntu1`	vulnerable
Ubuntu	nextcloud-desktop	24.04	`3.9.0-1`	vulnerable
Ubuntu	nextcloud-desktop	24.04	`3.10.0-1`	vulnerable
Ubuntu	nextcloud-desktop	24.04	`3.11.0-1`	vulnerable
Ubuntu	nextcloud-desktop	24.04	`3.11.0-1.1build3`	vulnerable
Ubuntu	nextcloud-desktop	24.04	`3.11.0-1.1build4`	vulnerable

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	nextcloud-desktop	source	sid	`3.16.6-3`	not yet assigned	Not reported	Not reported
Debian	nextcloud-desktop	source	forky	`3.16.6-3`	not yet assigned	Not reported	Not reported
Debian	nextcloud-desktop	source	trixie	`3.16.6-3`	not yet assigned	Not reported	Not reported
Debian	nextcloud-desktop	source	bookworm	`(unfixed)`	not yet assigned	Not reported	Not reported
Cpe	desktop	cpe	Not reported	`3.16.5`	Not reported	NVD-CVE-2025-66549	Not reported

Notes

[bookworm] nextcloud-desktop: Minor issue

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[caja-nextcloud]Affected
Source package: [nextcloud-desktop]
Details (2)
- 3.7.3-1+deb12u2 · all · bookworm
  Affected
  dsa · nextcloud-desktop · debian · bookworm
- 3.7.3-1+deb12u2 · all · bookworm
  Affected
  dsa · nextcloud-desktop · debian · bookworm
[dolphin-nextcloud]Affected
Source package: [nextcloud-desktop]
Details (2)
- 3.7.3-1+deb12u2 · amd64 · bookworm
  Affected
  dsa · nextcloud-desktop · debian · bookworm
- 3.7.3-1+deb12u2 · arm64 · bookworm
  Affected
  dsa · nextcloud-desktop · debian · bookworm
[libnextcloudsync0]Affected
Source package: [nextcloud-desktop]
Details (2)
- 3.7.3-1+deb12u2 · amd64 · bookworm
  Affected
  dsa · nextcloud-desktop · debian · bookworm
- 3.7.3-1+deb12u2 · arm64 · bookworm
  Affected
  dsa · nextcloud-desktop · debian · bookworm
[libnextcloudsync-dev]Affected
Source package: [nextcloud-desktop]
Details (2)
- 3.7.3-1+deb12u2 · amd64 · bookworm
  Affected
  dsa · nextcloud-desktop · debian · bookworm
- 3.7.3-1+deb12u2 · arm64 · bookworm
  Affected
  dsa · nextcloud-desktop · debian · bookworm
[nautilus-nextcloud]Affected
Source package: [nextcloud-desktop]
Details (2)
- 3.7.3-1+deb12u2 · all · bookworm
  Affected
  dsa · nextcloud-desktop · debian · bookworm
- 3.7.3-1+deb12u2 · all · bookworm
  Affected
  dsa · nextcloud-desktop · debian · bookworm
[nemo-nextcloud]Affected
Source package: [nextcloud-desktop]
Details (2)
- 3.7.3-1+deb12u2 · all · bookworm
  Affected
  dsa · nextcloud-desktop · debian · bookworm
- 3.7.3-1+deb12u2 · all · bookworm
  Affected
  dsa · nextcloud-desktop · debian · bookworm
[nextcloud-desktop]Affected
Details (2)
- 3.7.3-1+deb12u2 · amd64 · bookworm
  Affected
  dsa · nextcloud-desktop · debian · bookworm
- 3.7.3-1+deb12u2 · arm64 · bookworm
  Affected
  dsa · nextcloud-desktop · debian · bookworm
[nextcloud-desktop-cmd]Affected
Source package: [nextcloud-desktop]
Details (2)
- 3.7.3-1+deb12u2 · amd64 · bookworm
  Affected
  dsa · nextcloud-desktop · debian · bookworm
- 3.7.3-1+deb12u2 · arm64 · bookworm
  Affected
  dsa · nextcloud-desktop · debian · bookworm
[nextcloud-desktop-common]Affected
Source package: [nextcloud-desktop]
Details (2)
- 3.7.3-1+deb12u2 · all · bookworm
  Affected
  dsa · nextcloud-desktop · debian · bookworm
- 3.7.3-1+deb12u2 · all · bookworm
  Affected
  dsa · nextcloud-desktop · debian · bookworm
[nextcloud-desktop-doc]Affected
Source package: [nextcloud-desktop]
Details (2)
- 3.7.3-1+deb12u2 · all · bookworm
  Affected
  dsa · nextcloud-desktop · debian · bookworm
- 3.7.3-1+deb12u2 · all · bookworm
  Affected
  dsa · nextcloud-desktop · debian · bookworm
[nextcloud-desktop-l10n]Affected
Source package: [nextcloud-desktop]
Details (2)
- 3.7.3-1+deb12u2 · all · bookworm
  Affected
  dsa · nextcloud-desktop · debian · bookworm
- 3.7.3-1+deb12u2 · all · bookworm
  Affected
  dsa · nextcloud-desktop · debian · bookworm

Observed: Oct 24, 2026, 8:28:03 AM UTC

References

[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database]