CVE-2023-28997

6.7 MEDIUM
Published: April 04, 2023 Modified: November 03, 2025
View on NVD

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.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:P/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:N

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://ethz.ch/content/dam/ethz/special-interest/infk/inst-infsec/appliedcrypto/education/theses/report_DanieleCoppola.pdf
Source: security-advisories@github.com
Exploit Technical Description Third Party Advisory
https://github.com/nextcloud/desktop/pull/5324
Source: security-advisories@github.com
Patch
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-4p33-rw27-j5fc
Source: security-advisories@github.com
Vendor Advisory
https://ethz.ch/content/dam/ethz/special-interest/infk/inst-infsec/appliedcrypto/education/theses/report_DanieleCoppola.pdf
Source: af854a3a-2127-422b-91ae-364da2661108
Exploit Technical Description Third Party Advisory
https://github.com/nextcloud/desktop/pull/5324
Source: af854a3a-2127-422b-91ae-364da2661108
Patch
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-4p33-rw27-j5fc
Source: af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory
https://lists.debian.org/debian-lts-announce/2025/09/msg00018.html
Source: af854a3a-2127-422b-91ae-364da2661108

7 reference(s) from NVD

Quick Stats

CVSS v3 Score
6.7 / 10.0
EPSS (Exploit Probability)
0.7%
70th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

CWE-323

Affected Vendors

nextcloud

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