CVE-2025-21309: CWE-591: Sensitive Data Storage in Improperly Locked Memory in Microsoft Windows Server 2012
Windows Remote Desktop Services Remote Code Execution Vulnerability
AI Analysis
Technical Summary
CVE-2025-21309 is a vulnerability classified under CWE-591 (Sensitive Data Storage in Improperly Locked Memory) affecting Microsoft Windows Server 2012 (version 6.2.9200.0). The flaw exists in Windows Remote Desktop Services and allows remote code execution with high impact on confidentiality, integrity, and availability. The vulnerability has a CVSS v3.1 base score of 8.1, indicating high severity. Microsoft has published an official fix for this issue as documented in their security update guide.
Potential Impact
Successful exploitation of this vulnerability could allow an unauthenticated attacker to execute arbitrary code remotely on the affected system, potentially leading to full system compromise. The vulnerability impacts confidentiality, integrity, and availability of the system due to improper handling of sensitive data in memory.
Mitigation Recommendations
An official fix is available from Microsoft. Administrators should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21309 to remediate this vulnerability.
CVE-2025-21309: CWE-591: Sensitive Data Storage in Improperly Locked Memory in Microsoft Windows Server 2012
Description
Windows Remote Desktop Services Remote Code Execution Vulnerability
CVSS v3.1
Score 8.1high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2025-21309 is a vulnerability classified under CWE-591 (Sensitive Data Storage in Improperly Locked Memory) affecting Microsoft Windows Server 2012 (version 6.2.9200.0). The flaw exists in Windows Remote Desktop Services and allows remote code execution with high impact on confidentiality, integrity, and availability. The vulnerability has a CVSS v3.1 base score of 8.1, indicating high severity. Microsoft has published an official fix for this issue as documented in their security update guide.
Potential Impact
Successful exploitation of this vulnerability could allow an unauthenticated attacker to execute arbitrary code remotely on the affected system, potentially leading to full system compromise. The vulnerability impacts confidentiality, integrity, and availability of the system due to improper handling of sensitive data in memory.
Mitigation Recommendations
An official fix is available from Microsoft. Administrators should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21309 to remediate this vulnerability.
Technical Details
- Data Version
- 5.1
- Assigner Short Name
- microsoft
- Date Reserved
- 2024-12-10T23:54:12.952Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21309","vendor":"Microsoft"}]
Threat ID: 68c0bd519ed239a66badeba1
Added to database: 09/09/2025, 23:50:41 UTC
Last enriched: 06/10/2026, 09:52:41 UTC
Last updated: 09/10/2026, 19:36:49 UTC
Views: 153
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.