CVE-2025-12815
📋 TL;DR
An ownership verification flaw in AWS Research and Engineering Studio (RES) Virtual Desktop preview page allows authenticated remote users to view other users' active desktop session metadata, including periodic preview screenshots. This affects AWS RES users running versions before 2025.09. The vulnerability enables unauthorized access to sensitive session information.
💻 Affected Systems
- AWS Research and Engineering Studio (RES)
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
An attacker could monitor multiple users' desktop activities, potentially capturing sensitive data, credentials, or proprietary information displayed during active sessions.
Likely Case
Unauthorized viewing of other users' desktop metadata and periodic screenshots, potentially exposing sensitive information or work-in-progress data.
If Mitigated
With proper access controls and network segmentation, impact is limited to authorized users within the same environment, reducing exposure of sensitive data.
🎯 Exploit Status
Exploitation requires authenticated access but appears straightforward based on the CWE-283 (Unverified Ownership) classification.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2025.09
Vendor Advisory: https://aws.amazon.com/security/security-bulletins/AWS-2025-026/
Restart Required: Yes
Instructions:
1. Backup current RES configuration. 2. Upgrade AWS RES to version 2025.09 or later. 3. Restart RES services. 4. Verify the upgrade completed successfully.
🔧 Temporary Workarounds
Disable Virtual Desktop Preview
allTemporarily disable the Virtual Desktop preview functionality to prevent exploitation.
# Consult AWS RES documentation for specific disable commands
Restrict Access Controls
allImplement strict access controls and network segmentation to limit who can access the RES Virtual Desktop preview page.
# Configure AWS IAM policies and network ACLs appropriately
🧯 If You Can't Patch
- Implement strict network segmentation to isolate RES instances from untrusted networks
- Enforce strong authentication and authorization controls with principle of least privilege
🔍 How to Verify
Check if Vulnerable:
Check AWS RES version via admin console or CLI. If version is earlier than 2025.09, the system is vulnerable.Check Version:
aws res describe-instance --instance-id [INSTANCE_ID] | grep VersionVerify Fix Applied:
After upgrading, verify version is 2025.09 or later and test that authenticated users cannot access other users' desktop session metadata.📡 Detection & Monitoring
Log Indicators:
- Unusual access patterns to Virtual Desktop preview endpoints
- Multiple user session metadata access from single account
Network Indicators:
- Excessive requests to /preview or similar Virtual Desktop endpoints
- Unusual data transfers from RES preview functionality
SIEM Query:
source="aws-res" AND (event="preview_access" OR event="desktop_metadata") AND user!=target_user