CVE-2023-28997

What it is

The Nextcloud Desktop Client is a tool to synchronize files from Nextcloud Server. Starting with version 3.0.0 and prior to version 3.6.5, a malicious server administrator can recover and modify the contents of end-to-end encrypted files. Users should upgrade the Nextcloud Desktop client to 3.6.5 to receive a patch. No known workarounds are available.

At a glance

Exploitability

Can be exploited with physical access with an admin-level account, but needs a user to act. High risk of data exposure, data tampering.

Exploit odds

1.1% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2023-04-04 13:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-17 05:49 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 1.1% in the next 30 days (EPSS).
• Severity: 6.7 MEDIUM (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2023-04-04 13:15 UTC

Last modified

2026-06-17 05:49 UTC

Exploit probability

1.1% · EPSS, next 30 days

Weakness

CWE-323

Record status

Modified

Affected

• Nextcloud Desktop < 3.6.5

Attack profile CVSS 3.1 · 6.7

Attack vector

Physical

Complexity

Low

Privileges needed

High

User interaction

Required

Scope

Changed

Confidentiality

High

Integrity

High

Availability

None

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2023-28997.md and follow it. Check whether this project is affected by CVE-2023-28997. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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