CVE-2024-46958: In Nextcloud Desktop Client 3.13.1 through 3.13.3 on Linux, synchronized files (between the server and client)

This month

CRITICAL 9.1REMOTEWATCHLISTUPGRADE

CVE-2024-46958 is a critical-severity flaw (CVSS 9.1) affecting desktop. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

In Nextcloud Desktop Client 3.13.1 through 3.13.3 on Linux, synchronized files (between the server and client) may become world writable or world readable. This is fixed in 3.13.4.

Why this priority

Critical severity
Remotely exploitable, no login, no user action
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	9.1 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.6% (top 54%)
CISA exploited list	No
Published	2024-09-16
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: nextcloud

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2024-09-16 02:15 UTCPublished CVE record published
2026-06-17 07:56 UTCUpdated Record last modified

nextcloud desktop UPGRADE

Affected: >= 3.13.1 and < 3.13.4

Fixed in: 3.13.4

Safe to downgrade to: a release before 3.13.1

1. Check installed version

apt-cache policy desktop || rpm -q desktop || desktop --version

2. UPGRADE to 3.13.4 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade desktop

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade desktop

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 3.13.1 (Debian / Ubuntu)

apt-cache madison desktop sudo apt install desktop=<VERSION_BEFORE_3.13.1> sudo apt-mark hold desktop

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list desktop sudo dnf downgrade desktop-<VERSION_BEFORE_3.13.1> sudo dnf versionlock add desktop

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2024-46958?

desktop: upgrade to 3.13.4. Exact commands for each OS are on this page.

Is CVE-2024-46958 being exploited?

CVE-2024-46958 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2024-46958 affect?

CVE-2024-46958 affects desktop. Severity is critical (CVSS 9.1). In Nextcloud Desktop Client 3.13.1 through 3.13.3 on Linux, synchronized files (between the server and client) may become world writable or world readable. This is fixed in 3.13.4.

How urgent is CVE-2024-46958?

Priority 53/100. Critical severity; Remotely exploitable, no login, no user action; On your watchlist

Software pages

Nextcloud vulnerabilities

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References

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