CVE-2024-46958

Synced-folder disclosure and tampering via excessive permissions

Published Sep 16, 2024 · Updated Mar 13, 2025

Improper permissions in Nextcloud Desktop Client 3.13.1 through 3.13.3 on Linux allow physically proximate attackers to read or modify synced folders. The sync engine maps FileSystem::FolderPermissions::ReadWrite to group_write and others_write instead of restricting write access to the owner. A victim must synchronize a new or changed folder; another account with access to the Linux host can then inspect synchronized content or alter files in the exposed folder.

CVSS severity5.9
Medium
EPSS probability0.56%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper permissions in Nextcloud Desktop Client 3.13.1 through 3.13.3 on Linux allow physically proximate attackers to read or modify synced folders. The sync engine maps FileSystem::FolderPermissions::ReadWrite to group_write and others_write instead of restricting write access to the owner. A victim must synchronize a new or changed folder; another account with access to the Linux host can then inspect synchronized content or alter files in the exposed folder.

The record

CVE
CVE-2024-46958
Published
Sep 16, 2024
Updated
Mar 13, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-278, T1005, T1565.001
Attack vector
physical
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 16, 2024CVE publishedPublication date reported by the CVE source.
  2. Mar 13, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorphysical
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.9NextcloudCVSS:3.1/AV:P/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
9.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorphysical
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-278Insecure Preserved Inherited Permissions
T1005Data from Local System
T1565.001Stored Data Manipulation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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