Microsoft Power Pages Privilege Elevation (CVE-2025-24989)

Historical catalog analysis: CISA added this entry on February 21, 2025. The entry reflects catalog information retrieved on August 31, 2026, not a snapshot archived on the inclusion date. Check current vendor guidance before acting.

What the vulnerability is

CVE-2025-24989 is an improper access control vulnerability (CWE-284) affecting Microsoft Power Pages. The flaw allows an unauthorized attacker to operate over a network to potentially bypass user registration controls, resulting in unauthorized privilege elevation.

Exposure and applicability

This vulnerability applies to organizations utilizing Microsoft Power Pages for external-facing portals or internal sites where user registration and access control mechanisms are deployed. Because the attack vector is network-based, any instance of Power Pages exposed to untrusted networks or accessible by unauthorized internal users is potentially at risk. The primary exposure path involves the bypass of controls intended to regulate how users register and gain elevated permissions within the environment.

Remediation priorities

Based on our analysis, vulnerability management teams should prioritize the following actions:

1. Asset Identification: Identify all active Microsoft Power Pages environments across the organization’s cloud footprint to determine the total attack surface.
2. Vendor Mitigation Deployment: Apply the mitigations provided by Microsoft. For cloud-managed services, this often involves ensuring the environment is updated to the latest patched version provided by the vendor.
3. Access Review: Evaluate current user registration settings and privilege assignments within Power Pages to identify any existing anomalies that may indicate unauthorized elevation.
4. Service Evaluation: In scenarios where mitigations cannot be verified or applied, evaluate whether the product’s business utility outweighs the risk of continued exposure, as discontinuing use is a supported alternative for risk reduction.

How to validate remediation

Verification must move beyond simple version checks, as cloud service updates may not immediately reflect in all management consoles. To verify that exposure has been reduced, defenders should:

• Behavioral Testing: Attempt to register a new user or modify existing registration parameters using an unauthorized account to confirm that the privilege elevation path is blocked.
• Configuration Audit: Review the access control lists (ACLs) and registration settings against the vendor’s hardened baseline for this specific CVE.
• Log Analysis: Examine audit logs for unsuccessful attempts to bypass registration controls, which can provide evidence that the mitigation is actively rejecting unauthorized requests.

Limits and open questions

While applying vendor mitigations reduces the likelihood of exploitation, residual risk remains if custom configurations or third-party integrations override default access controls. It remains unknown whether this vulnerability has been leveraged by ransomware campaigns. Furthermore, because Power Pages is a cloud service, the timing of patch propagation across different geographic regions may vary, meaning an environment could be vulnerable even after a general vendor announcement.

Source and editorial note

CVE-2025-24989: Microsoft Power Pages Improper Access Control Vulnerability · Source date: February 21, 2025 · Retrieved August 31, 2026.

Material facts are tied to the cited primary source. Recommendations are independent defensive analysis unless attributed to the source. Confirm consequential decisions against current authoritative guidance.

Archive date: February 24, 2025. The displayed post date is assigned three days after the source date to organize this retrospective archive; it does not mean this site published the analysis then. First published by this site: October 24, 2026 at 00:08 UTC.

Request a Vulnerability Assessment