Quick answers
- Is CVE-2025-12815 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2025-12815 being exploited in the wild.
- How severe is CVE-2025-12815?
- High severity, with a CVSS score of 4.3, published 6 November 2025.
- Which products and versions are affected?
- Amazon Web Services Research and Engineering Studio < 2025.09.
- Is there a fix for CVE-2025-12815?
- A patch was published on 2025-11-06: Fixed in version 2025.09 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2025-12815 attacked?
- It is attacked over the network, in a web application.
- Am I affected by CVE-2025-12815?
- Check whether you run Amazon AWS or Amazon Web Services Research and Engineering Studio at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
An ownership verification vulnerability exists in the Virtual Desktop preview page of Research and Engineering Studio (RES) on AWS. The flaw allows an authenticated remote user to bypass access controls and view metadata and periodic desktop screenshots of active sessions belonging to other users. This is caused by insufficient validation of session ownership when requesting preview data. The issue is resolved in RES version 2025.09, which implements proper ownership checks.
Affected products
- AWS Research and Engineering Studio (RES) on AWS < 2025.09
Timeline
- 2025-11-06: disclosed
- 2025-11-06: patched: Fixed in version 2025.09