CVE-2025-63800
Published: 18 November 2025
Summary
CVE-2025-63800 is a high-severity Weak Password Requirements (CWE-521) vulnerability in Opensourcepos Open Source Point Of Sale. Its CVSS base score is 7.5 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Valid Accounts (T1078); ranked at the 39.9th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-198040
Vulnerability details
The password change endpoint in Open Source Point of Sale 3.4.1 allows users to set their account password to an empty string due to missing server-side validation. When an authenticated user omits or leaves the `password` and `repeat_password` parameters empty…
more
in the password change request, the backend still returns a successful response and sets the password to an empty string. This effectively disables authentication and may allow unauthorized access to user or administrative accounts.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Vulnerability enables authenticated users to manipulate account passwords to empty strings (T1098), exploiting a public-facing web application endpoint (T1190), facilitating unauthorized access via valid accounts with no password (T1078).
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Configuration settings can define and enforce strong password requirements to avoid weak policies.
IA policy establishes password requirements, directly addressing weak password requirements.
Ensuring authenticators have sufficient strength of mechanism for intended use addresses weak password requirements.
Organization-wide password and authentication policies are applied uniformly, preventing weak local password requirements.
Facilitated training and awareness of current practices improves definition and enforcement of sufficiently strong password requirements.
Dedicated security resources support deployment of strong authentication systems and enforcement of robust password policies.
Vulnerability scans assess password policies and weak credential requirements against benchmarks.
User documentation on maintaining security includes password requirements, directly mitigating weak password policies.