CVE catalog

CVE-2021-37617

nextcloud-desktop: CVE-2021-37617

Severity: Low
Source: [NVD] · [CVE record]
EPSS: 0.46% · Oct 25, 2026

The Nextcloud Desktop Client is a tool to synchronize files from Nextcloud Server with a computer. The Nextcloud Desktop Client invokes its uninstaller script when being installed to make sure there are no remnants of previous installations. In versions 3.0.3 through 3.2.4, the Client searches the `Uninstall.exe` file in a folder that can be written by regular users. This could lead to a case where a malicious user creates a malicious `Uninstall.exe`, which would be executed with administrative privileges on the Nextcloud Desktop Client installation. This issue is fixed in Nextcloud Desktop Client version 3.3.0. As a workaround, do not allow untrusted users to create content in the `C:\` system folder and verify that there is no malicious `C:\Uninstall.exe` file on the system.

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`	not affected
Debian	nextcloud-desktop	forky	`35.0.0-1`	not affected
Debian	nextcloud-desktop	trixie	`3.16.7-1~deb13u1`	not affected
Debian	nextcloud-desktop	bookworm	`3.7.3-1+deb12u2`	not affected

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	nextcloud-desktop	source	sid	`Not affected`	unimportant	Not reported	Not reported
Debian	nextcloud-desktop	source	forky	`Not affected`	unimportant	Not reported	Not reported
Debian	nextcloud-desktop	source	trixie	`Not affected`	unimportant	Not reported	Not reported
Debian	nextcloud-desktop	source	bookworm	`Not affected`	unimportant	Not reported	Not reported

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[caja-nextcloud]Not affected
Source package: [nextcloud-desktop]
Details (2)
- 3.7.3-1+deb12u2 · all · bookworm
  Not affected
  dsa · nextcloud-desktop · debian · bookworm
- 3.7.3-1+deb12u2 · all · bookworm
  Not affected
  dsa · nextcloud-desktop · debian · bookworm
[dolphin-nextcloud]Not affected
Source package: [nextcloud-desktop]
Details (2)
- 3.7.3-1+deb12u2 · amd64 · bookworm
  Not affected
  dsa · nextcloud-desktop · debian · bookworm
- 3.7.3-1+deb12u2 · arm64 · bookworm
  Not affected
  dsa · nextcloud-desktop · debian · bookworm
[libnextcloudsync0]Not affected
Source package: [nextcloud-desktop]
Details (2)
- 3.7.3-1+deb12u2 · amd64 · bookworm
  Not affected
  dsa · nextcloud-desktop · debian · bookworm
- 3.7.3-1+deb12u2 · arm64 · bookworm
  Not affected
  dsa · nextcloud-desktop · debian · bookworm
[libnextcloudsync-dev]Not affected
Source package: [nextcloud-desktop]
Details (2)
- 3.7.3-1+deb12u2 · amd64 · bookworm
  Not affected
  dsa · nextcloud-desktop · debian · bookworm
- 3.7.3-1+deb12u2 · arm64 · bookworm
  Not affected
  dsa · nextcloud-desktop · debian · bookworm
[nautilus-nextcloud]Not affected
Source package: [nextcloud-desktop]
Details (2)
- 3.7.3-1+deb12u2 · all · bookworm
  Not affected
  dsa · nextcloud-desktop · debian · bookworm
- 3.7.3-1+deb12u2 · all · bookworm
  Not affected
  dsa · nextcloud-desktop · debian · bookworm
[nemo-nextcloud]Not affected
Source package: [nextcloud-desktop]
Details (2)
- 3.7.3-1+deb12u2 · all · bookworm
  Not affected
  dsa · nextcloud-desktop · debian · bookworm
- 3.7.3-1+deb12u2 · all · bookworm
  Not affected
  dsa · nextcloud-desktop · debian · bookworm
[nextcloud-desktop]Not affected
Details (2)
- 3.7.3-1+deb12u2 · amd64 · bookworm
  Not affected
  dsa · nextcloud-desktop · debian · bookworm
- 3.7.3-1+deb12u2 · arm64 · bookworm
  Not affected
  dsa · nextcloud-desktop · debian · bookworm
[nextcloud-desktop-cmd]Not affected
Source package: [nextcloud-desktop]
Details (2)
- 3.7.3-1+deb12u2 · amd64 · bookworm
  Not affected
  dsa · nextcloud-desktop · debian · bookworm
- 3.7.3-1+deb12u2 · arm64 · bookworm
  Not affected
  dsa · nextcloud-desktop · debian · bookworm
[nextcloud-desktop-common]Not affected
Source package: [nextcloud-desktop]
Details (2)
- 3.7.3-1+deb12u2 · all · bookworm
  Not affected
  dsa · nextcloud-desktop · debian · bookworm
- 3.7.3-1+deb12u2 · all · bookworm
  Not affected
  dsa · nextcloud-desktop · debian · bookworm
[nextcloud-desktop-doc]Not affected
Source package: [nextcloud-desktop]
Details (2)
- 3.7.3-1+deb12u2 · all · bookworm
  Not affected
  dsa · nextcloud-desktop · debian · bookworm
- 3.7.3-1+deb12u2 · all · bookworm
  Not affected
  dsa · nextcloud-desktop · debian · bookworm
[nextcloud-desktop-l10n]Not affected
Source package: [nextcloud-desktop]
Details (2)
- 3.7.3-1+deb12u2 · all · bookworm
  Not affected
  dsa · nextcloud-desktop · debian · bookworm
- 3.7.3-1+deb12u2 · all · bookworm
  Not affected
  dsa · nextcloud-desktop · debian · bookworm

Observed: Oct 23, 2026, 6:01:14 PM UTC

References

[https://security-tracker.debian.org/tracker/CVE-2021-37617]

[Debian Security Tracker] · [FIRST EPSS]