PatchSiren

PatchSiren cyber security CVE debrief

CVE-2025-24989 Microsoft CVE debrief

CVE-2025-24989 is a Microsoft Power Pages improper access control vulnerability that CISA added to its Known Exploited Vulnerabilities catalog on 2025-02-21. Because it is on the KEV list, defenders should treat it as a high-priority issue even though the supplied corpus does not include a CVSS score or deeper technical impact details. CISA's required action is to apply vendor mitigations, follow BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Vendor
Microsoft
Product
Power Pages
CVSS
Unknown
CISA KEV
Listed
Original CVE published
2025-02-21
Original CVE updated
2025-02-21
Advisory published
2025-02-21
Advisory updated
2025-02-21

Who should care

Organizations that use Microsoft Power Pages, especially administrators, security teams, and anyone responsible for cloud service governance or exposure management.

Technical summary

The supplied sources identify the issue as an improper access control vulnerability in Microsoft Power Pages. The most important operational detail in the corpus is that CISA classified it as a Known Exploited Vulnerability on 2025-02-21, with a remediation due date of 2025-03-14. The corpus does not provide exploit mechanics, attack prerequisites, or impact specifics, so defenders should rely on Microsoft's advisory and CISA guidance for exact remediation steps.

Defensive priority

High. CISA KEV inclusion indicates known exploitation and places this issue on an urgent remediation track.

Recommended defensive actions

  • Review Microsoft's advisory for CVE-2025-24989 and apply any vendor-provided mitigations or updates.
  • If mitigations are not available or cannot be applied quickly, follow CISA guidance for cloud services and consider discontinuing use until the issue is addressed.
  • Confirm whether any Power Pages deployments are in scope and inventory all affected environments.
  • Monitor access controls, authentication paths, and administrative activity for unexpected changes while remediation is underway.
  • Track the CISA KEV due date of 2025-03-14 as the operational deadline for action.

Evidence notes

This debrief is limited to the supplied corpus and official links. The source data confirms the CVE, product, vendor, CISA KEV status, date added, and due date, but it does not include exploit details or a CVSS score. Timing context uses the CVE and source published/modified dates of 2025-02-21.

Official resources

CISA published the KEV entry on 2025-02-21, the same date used for the CVE and source-item timestamps in the supplied corpus. No exploit code, proof-of-concept details, or other offensive material are included.