External risk intelligence

Cicool Builder Password Reset Vulnerability

CVE advisorySeverity: CRITICAL (CVSS 9.8)

CVE-2025-51543

The vulnerability exists in an administrator password reset endpoint of a web application builder. Web-based administration interfaces and authentication endpoints for content management systems or application builders are commonly deployed as internet-facing services to allow remote management, making them reachable from the public internet in typical real-world deployments.

Missing Authentication

Halo Surface Signal: 4 out of 5 — likely to be public-facing.

External exposure likelihood

Horizon Alert

Summary of the vulnerability and why it matters

This advisory concerns a critical vulnerability found in Cicool builder related to password reset functionality. The issue allows unauthorized individuals to reset administrator passwords, which could potentially lead to compromise of the system and its data. The main concern is confirming the relevance and exposure of this technology within our environment.

  • Unauthenticated users can reset admin passwords.
  • It affects system control and access.
  • Verify Cicool builder use and potential exposure.

Attack Path

How an attacker could exploit the issue

An attacker can compromise an application's administrative access by exploiting a flaw in the password reset functionality. This is possible because the reset password endpoint is accessible without any authentication, allowing an unauthenticated attacker to directly interact with it. By successfully triggering this vulnerability, an attacker can gain full control over the administrator account.

  • No authentication required.
  • Reset password endpoint triggered.
  • Full administrative access gained.

Live Threat

Current exploitation, exposure, and threat context

An unauthenticated attacker could reset the administrator's password via a specific endpoint, potentially gaining full control of the Cicool builder application. This could occur when the application is accessible over a network and the reset password functionality is not adequately secured. The primary risk is unauthorized administrative access to the application.

  • Administrator account credentials.
  • Via a network-accessible password reset endpoint.
  • Unauthorized administrative access to the application.

Operational Fix

Recommended remediation, mitigation, and detection steps

Understanding the impact of this critical vulnerability requires identifying the teams responsible for the Cicool builder and its administration. Infrastructure or platform teams likely manage the underlying systems, while application owners or a dedicated security team would oversee the Cicool builder's configuration and access controls. The initial step involves locating all instances of the affected Cicool builder, determining their exposure to the network, and assessing their business criticality to prioritize remediation efforts with the accountable owner.

  • Identify affected Cicool builder instances.
  • Confirm administrator access and business criticality.
  • Plan remediation with the Cicool builder owner.

Supplementary metadata

Validate whether this threat affects your internet-facing exposure.

Halo Threat Intelligence helps prioritize remediation with Halo Surface Signal and H/A/L/O context. Start exposure validation with a free external attack surface trial.

Frequently asked questions

What is Cicool builder?

Cicool builder is a web-based application development framework or toolset designed to help users create and manage web applications. It often serves as a foundational platform for building custom interfaces and handling backend logic, meaning it frequently includes integrated administrative panels to manage user accounts and system settings.

What does CWE-306 mean for CVE-2025-51543?

CWE-306 refers to a Missing Authentication for Critical Function weakness. In the context of CVE-2025-51543, it means the application performs a sensitive task—resetting the administrator's password—without first verifying the identity of the person making the request. This flaw allows anyone to interact with the password reset mechanism as if they were an authorized user.

How is this vulnerability triggered?

The vulnerability is triggered by sending a request to a specific administrative endpoint designed for password recovery. Because the software does not check for authentication, simply accessing the endpoint is sufficient to initiate the process. Notably, the vulnerability is not triggered by standard user interactions or authenticated sessions, but rather by directly targeting the reset password URL.

Is my instance of Cicool builder at risk?

If your application is accessible over the network, Halo Surface Signal classifies this as an external exposure. Because this is a web-based builder, these administrative interfaces are often deployed to be reachable from the internet for remote management. If your instance is configured this way, it is highly relevant to evaluate its security posture immediately.

What should I do if I use Cicool builder?

Start by identifying all active instances of the builder within your infrastructure. Coordinate with the application owners to determine which instances are network-accessible and which administrative functions are critical to business operations. Prioritize these findings with your team to assess the impact and plan necessary security updates or access restrictions to protect administrative accounts.

References