In the ownCloud application before 2.15 for Android, the lock protection mechanism can be bypassed by moving the system date/time into the past.
https://owncloud.com/security-advisories/security-lock-can-be-bypassed-by-changing-the-system-date/
Source: Mitre, NVD
Published: 2021-02-19
Updated: 2026-06-17
Base Score: 2.1
Vector: CVSS2#AV:L/AC:L/Au:N/C:P/I:N/A:N
Severity: Low
Base Score: 4.6
Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Severity: Medium
EPSS: 0.00057