Medium severity6.7NVD Advisory· Published Apr 4, 2023· Updated Jun 17, 2026

CVE-2023-28997

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Nextcloud/desktop
cpe:2.3:a:nextcloud:desktop:*:*:*:*:*:*:*:*
Range: >=3.0.0,<3.6.5
Nextcloud/Nextcloud Desktop Clientllm-create
Range: >=3.0.0,<3.6.5
Nextcloud/security-advisoriescpe-rescue
Range: >= 3.0.0, < 3.6.5

Patches

Vulnerability mechanics

References

github.com/nextcloud/desktop/pull/5324nvdPatch
ethz.ch/content/dam/ethz/special-interest/infk/inst-infsec/appliedcrypto/education/theses/report_DanieleCoppola.pdfnvdExploitTechnical DescriptionThird Party Advisory
github.com/nextcloud/security-advisories/security/advisories/GHSA-4p33-rw27-j5fcnvdVendor Advisory
lists.debian.org/debian-lts-announce/2025/09/msg00018.htmlnvd

News mentions

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cvss	0.436
epss	0.001
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000