Security readout for executives and security teams
Plain-English summary
CVE-2025-24989 is a Microsoft Power Pages access-control flaw that could let an unauthenticated attacker gain elevated privileges by bypassing registration controls. Microsoft says the issue is already mitigated in the service and affected customers were notified with review and cleanup instructions.
Executive priority
Treat this as high priority if your organization uses Power Pages and received Microsoft notification. The service fix is already applied, but business risk remains around whether attackers created accounts or changed privileges before mitigation.
Technical view
CWE-284 improper access control in Microsoft Power Pages could let an unauthenticated network attacker bypass user registration control and elevate privileges. Microsoft rates it CVSS 8.2 high, AV:N/AC:L/PR:N/UI:N, with low confidentiality and high integrity impact. Microsoft says the cloud service mitigation is already deployed.
Likely exposure
Exposure is limited to Microsoft Power Pages customers Microsoft identified and notified. Microsoft states customers who were not notified are not affected. Organizations using Power Pages should still verify notification status and review affected sites if contacted.
Exploitation context
The source bundle marks this CVE as CISA KEV, supporting known exploitation. Microsoft states affected customers received instructions for reviewing sites for potential exploitation and cleanup. No exploit method, indicators, or affected version details are provided in the supplied sources.
Researcher notes
Available evidence identifies Power Pages and improper access control, but not affected version ranges, exploit mechanics, or indicators. Validation should focus on tenant notification status, site-level registration behavior, and post-incident cleanup directed by Microsoft.
Mitigation direction
- Confirm whether Microsoft notified your tenant or site owners about this CVE.
- Follow Microsoft-provided review and cleanup instructions for affected Power Pages sites.
- Review registration controls, user roles, and newly created accounts on affected sites.
- Monitor Microsoft Power Pages guidance for any additional tenant actions.
Validation and detection
- Inventory Power Pages sites and identify owners, authentication settings, and registration controls.
- Check whether your organization received Microsoft notification for this CVE.
- Review site audit records for unexpected registrations, role changes, or privilege changes.
- Confirm cleanup actions were completed and documented for notified sites.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-284: Authorization and privilege behavior lookup
Authorization weaknesses can support privilege escalation and valid-account review, depending on exploit path. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupPrivilege behavior lookup
The CVE wording references privilege impact, so privilege escalation and authorization behavior review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2025-24989 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 8.2 (3.1)
- Known Exploited
- Yes
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N/E:U/RL:O/RC:C
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CISA KEV status
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N/E:U/RL:O/RC:C3.94.2Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
8.2HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N/E:U/RL:O/RC:C
Source materials
- CVE List V5 sourceCVE List V5
- Microsoft Power Pages Elevation of Privilege VulnerabilityCVE reference · vendor-advisory, patch
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-24989CVE reference · government-resource
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Access Control
Improper Access Control represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.