CVE-2025-24989: Microsoft Power Pages Privilege Escalation

CVE-2025-24989 Overview

An improper access control vulnerability in Power Pages allows an unauthorized attacker to elevate privileges over a network potentially bypassing the user registration control.

Critical Impact
This vulnerability allows privilege escalation through a registration control bypass.

Affected Products

Microsoft Power Pages

Discovery Timeline

2025-02-19T23:15:15.167 - CVE-2025-24989 published to NVD
2025-10-27T17:14:03.217 - Last updated in NVD database

Technical Details for CVE-2025-24989

Vulnerability Analysis

This vulnerability involves improper access control mechanisms, which allow unauthorized users to escalate their privileges. The vulnerability resides in the user registration controls of Microsoft Power Pages, enabling an attacker to potentially bypass these controls and gain elevated privileges on the network.

Root Cause

The main issue stems from insufficient validation of user privileges in the registration process, allowing attackers to manipulate user roles.

Attack Vector

This vulnerability can be exploited over the network, making it critical in scenarios where Power Pages is publicly accessible.

javascript

// Example exploitation code (sanitized)
fetch('http://vulnerable-server.com/api/register', {
  method: 'POST',
  headers: {
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    "username": "attacker",
    "role": "admin"
  })
})
.then(response => response.json())
.then(data => console.log(data));

Detection Methods for CVE-2025-24989

Indicators of Compromise

Unusual user role changes
Access logs showing suspicious API calls
Unauthorized administrative actions

Detection Strategies

Implement logging of registration attempts with alerts for role changes to admin or unauthorized roles. Utilize anomaly detection systems to capture unusual access patterns.

Monitoring Recommendations

Continuously monitor user registration logs and access controls with a focus on changes to user privileges and roles.

How to Mitigate CVE-2025-24989

Immediate Actions Required

Apply the latest patches released by Microsoft.
Review and restrict user role change permissions.
Enable strict logging and monitoring of registration processes.

Patch Information

Microsoft has released a patch to address this vulnerability. Refer to Microsoft's advisory for detailed patch instructions.

Workarounds

Restrict access to the registration API endpoints to trusted IP ranges and implement comprehensive logging of registration attempts.

bash

# Configuration example
iptables -A INPUT -p tcp -s TRUSTED_IP_RANGE --dport 80 -j ACCEPT
iptables -A INPUT -p tcp --dport 80 -j DROP