What is the CVSS score of CVE-2025-63800?

CVE-2025-63800 has a CVSS 3.1 base score of 7.5 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N. EPSS exploitation probability: 0.3%.

Which versions of Brute Force are affected by CVE-2025-63800?

Organizations using password change endpoint in Open Source Point of Sale 3.4.1 face notable risk from CVE-2025-63800 rated CVSS 7.5.

Is there a public PoC exploit available for CVE-2025-63800?

Yes, a public proof-of-concept exploit is available for CVE-2025-63800. Prioritise patching immediately. EPSS: 0.3%.

How to fix or mitigate CVE-2025-63800?

Within 30 days: Identify all affected systems and apply vendor patches as part of regular patch cycle. Monitor vendor channels for patch availability.

Brute Force CVE-2025-63800

HIGH

Weak Password Requirements (CWE-521)

2025-11-18 cve@mitre.org

Authentication Bypass Brute Force Open Source Point Of Sale

7.5

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

7.5 HIGH

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Lifecycle Timeline

Analysis Generated

Mar 28, 2026 - 19:22 vuln.today

PoC Detected

Dec 19, 2025 - 16:51 vuln.today

Public exploit code

CVE Published

Nov 18, 2025 - 16:15 nvd

HIGH 7.5

DescriptionCVE.org

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 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.

AnalysisAI

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. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified under CWE-521. 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 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. Affected products include: Opensourcepos Open Source Point Of Sale.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

CVE-2025-63800 vulnerability details – vuln.today

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Brute Force CVE-2025-63800

Severity by source

CVSS VectorNVD

Lifecycle Timeline

DescriptionCVE.org

AnalysisAI

Technical ContextAI

RemediationAI

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External POC / Exploit Code