Is CVE-2023-28997 actively exploited?

CVE-2023-28997 has no public evidence of in-the-wild exploitation as of 2025-11-03.

What is the CVSS score for CVE-2023-28997?

CVE-2023-28997 has a CVSS score of 6.7 (MEDIUM severity). Vector: CVSS:3.1/AV:P/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:N.

How do I patch CVE-2023-28997?

Patch guidance is available from nextcloud security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2023-28997.

CVE-2023-28997 - remediation guidance & executive summary

Description

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.

CVSS Metrics

Vector: CVSS:3.1/AV:P/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:N
Attack Vector: physical
Complexity: low
Privileges: high
User Action: required
Scope: changed
Confidentiality: high
Integrity: high
Availability: none
Weaknesses: CWE-323

Metadata

Primary Vendor: NEXTCLOUD
Published: 4/4/2023
Last Modified: 11/3/2025
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

CVE-2023-28997

Description

CVSS Metrics

Metadata

Affected Products

Remediation Guidance

Executive Summary