What is CVE-2023-28647?

CVE-2023-28647 is a medium-severity vulnerability in Nextcloud, classified under Improper Preservation of Permissions. CVSS score: 4.4/10. Published 2023-03-30.

How severe is CVE-2023-28647?

Medium severity. CVSS v3 base score is 4.4 out of 10.

Auth bypass in Nextcloud

CVE-2023-28647

Nextcloud iOS is an ios application used to interface with the nextcloud home cloud ecosystem. In versions prior to 4.7.0 when an attacker has physical access to an unlocked device, they may enable the integration into the iOS Files app and bypass the Nextcloud pin/password protection and gain access to a users files. It is recommended that the Nextcloud iOS app is upgraded to 4.7.0. There are no known workarounds for this vulnerability.

EPSS: 0.003 (20.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.4 (Medium). Vector: CVSS:3.1/AV:P/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:L.

Affected products

Nextcloud
Nextcloud Security-advisories — versions < 4.7.0

Weakness classification (CWE)

References

security-advisories@github.com (x_refsource_CONFIRM, Vendor Advisory)
security-advisories@github.com (Patch, x_refsource_MISC)

Frequently asked questions

What is CVE-2023-28647?: CVE-2023-28647 is a medium-severity vulnerability in Nextcloud, classified under Improper Preservation of Permissions. CVSS score: 4.4/10. Published 2023-03-30.
How severe is CVE-2023-28647?: Medium severity. CVSS v3 base score is 4.4 out of 10.