CVE-2025-21396: CWE-862: Missing Authorization in Microsoft Microsoft Account
Missing authorization in Microsoft Account allows an unauthorized attacker to elevate privileges over a network.
AI Analysis
Technical Summary
CVE-2025-21396 is a missing authorization vulnerability (CWE-862) in Microsoft Account that enables an attacker without prior privileges to elevate their privileges remotely. The vulnerability is network exploitable with low attack complexity and no user interaction required. Microsoft has released an official fix to address this issue.
Potential Impact
An attacker can elevate their privileges over a network without authorization, potentially leading to significant impact on integrity and availability of the affected system. Confidentiality impact is not indicated. No known active exploitation has been reported.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the patch as provided in the Microsoft security update guide at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21396 to remediate this vulnerability.
CVE-2025-21396: CWE-862: Missing Authorization in Microsoft Microsoft Account
Description
Missing authorization in Microsoft Account allows an unauthorized attacker to elevate privileges over a network.
CVSS v3.1
Score 8.2high
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2025-21396 is a missing authorization vulnerability (CWE-862) in Microsoft Account that enables an attacker without prior privileges to elevate their privileges remotely. The vulnerability is network exploitable with low attack complexity and no user interaction required. Microsoft has released an official fix to address this issue.
Potential Impact
An attacker can elevate their privileges over a network without authorization, potentially leading to significant impact on integrity and availability of the affected system. Confidentiality impact is not indicated. No known active exploitation has been reported.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the patch as provided in the Microsoft security update guide at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21396 to remediate this vulnerability.
Technical Details
- Data Version
- 5.1
- Assigner Short Name
- microsoft
- Date Reserved
- 2024-12-11T00:29:48.374Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21396","vendor":"Microsoft"}]
Threat ID: 68c0bd549ed239a66badec66
Added to database: 09/09/2025, 23:50:44 UTC
Last enriched: 06/10/2026, 10:00:44 UTC
Last updated: 07/07/2026, 10:33:19 UTC
Views: 233
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
External Links
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.