VulnerabilityModified
CVE-2023-28997
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.
MEDIUM 6.5EPSS 1.11%
Does this matter?
Lower severity and a low EPSS score (1.11%). Track it; it rarely justifies an emergency change on its own.
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 3.1
- 6.5 MEDIUMCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
- EPSS
- 1.11% probability · 64th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-323
- Affected
- nextcloud/desktop
- Source
- security-advisories@github.com
References
- https://ethz.ch/content/dam/ethz/special-interest/infk/inst-infsec/appliedcrypto/education/theses/report_DanieleCoppola.pdfExploit, Technical Description, Third Party Advisory
- https://github.com/nextcloud/desktop/pull/5324Patch
- https://github.com/nextcloud/security-advisories/security/advisories/GHSA-4p33-rw27-j5fcVendor Advisory
- https://ethz.ch/content/dam/ethz/special-interest/infk/inst-infsec/appliedcrypto/education/theses/report_DanieleCoppola.pdfExploit, Technical Description, Third Party Advisory
- https://github.com/nextcloud/desktop/pull/5324Patch
- https://github.com/nextcloud/security-advisories/security/advisories/GHSA-4p33-rw27-j5fcVendor Advisory
- https://lists.debian.org/debian-lts-announce/2025/09/msg00018.html
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.